This Gumstick Battery and Charger guide compares compatibility, capacity, charging options, pack size, and device support for 10 models.
Gumstick batteries are slim rechargeable cells used in many portable CD, MiniDisc, MD, and MP3 players, especially models built by Sony, Panasonic, JVC, Sharp, Aiwa, and Energizer. A useful replacement must match both the battery format and the device’s charging method, not merely resemble the original shape.
We compared the ten listed products by examining battery chemistry, voltage, stated capacity, pack quantity, charger inclusion, physical dimensions, supported model numbers, and special charging features. The list also identifies several AA, AAA, AAAA, and airsoft batteries included to clarify which options are relevant to a gumstick-specific search.
Each review explains who the product best suits and where its trade-offs lie. We pay particular attention to whether a charger is included, because many gumstick battery bundles contain replacement cells only. Ratings and availability can change, and current prices should always be checked on the linked product page before purchasing.
4.6Editor score
3.7Editor score
4.2Editor score
This side-by-side comparison covers gumstick replacements, several standard rechargeable formats, and one airsoft battery system. Specifications reveal which options include a charger, how many cells are supplied, and which devices each package is designed to support.
This is the most directly aligned option in the list because it combines two 1.2-volt, 1400mAh NiMH gumstick batteries with a dedicated charger. Its customer rating is 3.7, which is lower than those of several alternatives, but the package addresses the central challenge of finding a rechargeable replacement for slim gumstick devices: obtaining a charger that is designed to recharge them.
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The batteries measure approximately 2.6 by 0.7 by 0.24 inches, or 67 by 17 by 6 millimeters. The charger accepts a DC 5V, 500mA micro USB input and provides a DC 1.48V, 250mA output. Compatibility extends across a large collection of Sony, Panasonic, JVC, Sharp, Aiwa, Energizer, and iRiver model numbers, making the list unusually comprehensive for owners of aging portable media players.
The trade-offs are that the product has the lowest rating among the ten selections, and a very long compatibility description can make the listing difficult to scan. Buyers should also verify the physical dimensions and exact model number of their device rather than relying only on a broad brand association. A gumstick-shaped cell is not automatically compatible with every portable player sold by the same manufacturer.
This bundle is the strongest recommendation for a buyer who specifically needs replacement gumstick cells and a matching charger, particularly when two devices are kept in rotation or one cell is charged while the other is in use. It is less suitable for someone who already owns a suitable charger and simply wants the highest-capacity gumstick cells available in this list.
The included charger is designed around the voltage and charging requirements of NiMH gumstick cells. That integrated approach is more useful than buying loose replacement batteries and hoping a general-purpose charger can handle their unusually slim format.
Two cells allow one battery to remain in a player while the other recharges. This can be particularly helpful for portable CD and MiniDisc devices that may otherwise be unavailable while their original gumstick cell is charging.
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The Lancer Tactical Airsoft Battery Combo is a 9.6-volt, 1600mAh NiMH battery system supplied with a smart charger. Its rating is 4.2, placing it among the stronger products here, but it belongs to a fundamentally different category from the gumstick replacements. It is intended for compatible airsoft electric guns rather than portable CD, MiniDisc, MD, or MP3 players.
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The pack consists of eight 2/3A NiMH cells and uses a Tamiya-style battery connector with a mini Tamiya female connector assembled using 16-gauge wire. Its stated dimensions are 20 millimeters in diameter and 117 millimeters in length, and it weighs 6.7 ounces. The maker lists compatibility with numerous models, including the M4, M110, SR25, M249, G36, M14, RPK, PKM, L85, AUG, MP5A5, MC51, FNP90, and several other airsoft platforms.
The main limitation is obvious but important: this is not a replacement for the flat gumstick cells used in portable media devices. A user searching for “gumstick battery and charger” should not interpret its high capacity as directly comparable with a 1.2-volt gumstick cell. Modified or upgraded airsoft guns may also require the battery compartment to be measured to confirm the pack will fit.
It earns its place in the comparison as a premium battery-and-charger combination for airsoft users, with a smart charger and a substantial 1600mAh NiMH pack. For portable media players, however, the Milestock bundle and HQRP gumstick cells are far more relevant choices. Confirm the gun, connector, voltage, and compartment dimensions before ordering.
The eight-cell NiMH configuration delivers 9.6 volts and a stated capacity of 1600mAh. That makes it relevant to users seeking sustained output from compatible airsoft equipment, rather than a slim power cell for a handheld media player.
The preassembled Tamiya-style connection simplifies installation, but modified guns can vary internally. Measuring the battery compartment is the sensible step before assuming a nominally compatible model will accept the full 117mm pack.
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The Duracell Ion Speed 1000 has the highest customer rating in this comparison at 4.6 and includes four pre-charged AA rechargeable batteries plus a wall charger. It is a polished, practical general-purpose battery set for household and business devices, but its charging slots accept AA or AAA NiMH cells rather than slim gumstick batteries.
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The charger can recharge four AA batteries or four AAA batteries at once, making it useful for high-volume collections of small devices. Its foldable wall plug improves portability and storage. The product information also states that it can recharge other brands of AA and AAA NiMH batteries, so buyers are not forced to use only the included cells.
A six-hour charge time is specified for the charger. That makes overnight charging convenient, though it is less attractive for users who need rapid turnaround during the day. The key limitation for a gumstick-focused buyer is absolute format compatibility: neither the included AA cells nor the charger can be adapted to charge the flat 1.2-volt NiMH cells used by many portable media players.
This is a strong budget-oriented battery-and-charger package for homes or offices that use standard AA and AAA rechargeable cells. It is not a viable substitute for a gumstick-specific charger, but it offers the clearest combination of rating, useful capacity, and flexible multi-brand charging in the list.
Charging four cells in one session reduces the inconvenience of rotating batteries one at a time. The design is especially useful for collections of remote controls, small electronics, flashlights, and other everyday products that use standard rechargeable formats.
Because the package includes cells that are ready for use, a buyer does not need to wait for an initial full charge. The ability to charge other compatible NiMH brands also makes the charger useful as the center of a mixed household battery collection.
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The EBL set combines two 1.2-volt, 400mAh NiMH AAAA batteries with a dedicated smart charger. It carries a 4.5 rating and is tailored primarily to Surface Pen and compatible active-stylus applications. While AAAA cells are smaller than gumsticks and are sometimes visually confused with slim batteries, they are a different standardized format and will not fit gumstick compartments.
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The charger receives a DC 5V, 1A input and supplies a DC 1.5V, 400mA output. Advanced IC control stops charging when the batteries are full, while an LED makes the charging process visible. The indicator does not illuminate if the charger is connected without a battery, which the product information identifies as expected behavior rather than a malfunction.
The batteries are described as suitable for up to 500 deep charge and discharge cycles, while the product title references 1200 cycles. This difference illustrates why buyers should distinguish between the listing’s headline claim and the more specific device-focused description. Actual service life also depends on usage, charging habits, storage, and the specific stylus in use.
Choose this package if your priority is a rechargeable battery and dedicated charger for a compatible Surface Pen or active stylus. Do not choose it for a Sony, Panasonic, JVC, Sharp, Aiwa, or Energizer portable player that requires a true gumstick cell. Its smart charging functions and compact format are useful, but format compatibility is the decisive issue.
The dedicated charger is matched to the chemistry and output requirements of the supplied AAAA cells. Automatic termination helps prevent continued charging after the batteries have reached the charger’s defined endpoint.
The explicit Surface Pen positioning makes the intended use clearer than a generic battery listing. Owners should still check the dimensions and polarity requirements of their specific stylus rather than assuming every AAAA-powered device behaves identically.
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This HQRP two-pack consists of 1.2-volt, 1200mAh NiMH gumstick batteries designed as replacements for compatible portable media players. Its 4.2 rating is solid, and the two-cell format makes it useful for rotating batteries across compatible Sony or Panasonic equipment. A charger is not included, so this is a replacement-cell pack rather than a complete battery-and-charger bundle.
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The stated compatibility list includes Sony NC-5WM, NC-6WM, NH-9WM, NH-10WM, NH-14WM, WM-701C, WM-RX707, WM-F100, WM-FX675, numerous MZ and D-E series numbers, and several Panasonic portable-player batteries. It is also stated that the batteries can be recharged up to 1000 times, although real longevity depends on charging cycles, heat, storage, and discharge depth.
Compared with the 1400mAh Milestock gumstick cells, these offer slightly lower stated capacity. The distinction may matter for owners who expect extended playback, but both products use standard 1.2-volt NiMH chemistry and serve the same basic replacement role when dimensions and polarity align. The absence of a charger is the more consequential issue for first-time owners.
This is a good choice for owners who already have a compatible gumstick charger or whose original device can recharge the replacement. Buyers seeking a self-contained solution should look to the Milestock 2-Pack Battery and Charger instead. Always confirm the exact battery number, terminal arrangement, and compartment fit.
Supplying two cells allows one to be charging while the other powers a compatible player. That convenience makes the set more versatile than a single replacement, especially for owners of two compatible devices.
A dedicated gumstick charger is not part of this package. Confirm that your player includes a suitable charging dock or that you already own a charger designed for 1.2-volt NiMH gumstick cells before ordering.
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The HQRP four-pack supplies four rechargeable 1.2-volt, 1200mAh NiMH gumstick cells. Its 3.8 rating is respectable, and the larger quantity is attractive for owners of several compatible devices, for maintaining a larger spare inventory, or for rotating multiple cells. The package does not include a charger.
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Compatibility spans a wide assortment of Sony, Panasonic, JVC, Sharp, Aiwa, Energizer, and iRiver portable-player batteries. The listing identifies compatible model numbers including NC-5WM, NC-6WM, NH-9WM, NH-10WM, NH-14WM, WM-701C, WM-RX707, WM-F100, WM-FX675, and many D-E, MZ, RP-BP, SL, and MD-ST series references. A 200-day warranty is also stated.
The four batteries share the same 1200mAh capacity as the smaller HQRP two-pack, so quantity rather than capacity is the main improvement. Buyers seeking maximum stated gumstick capacity may find the 1400mAh Milestock packs more appealing. As with every replacement listing, broad compatibility should still be narrowed down by checking the device’s original battery number and physical measurements.
This four-pack is most useful for collectors, repair technicians, or households with several aging portable media players that rely on the same gumstick format. It is less convenient for a first-time buyer because a separate suitable charger is required. It also has a lower rating than the two-pack HQRP, so customer feedback deserves attention before purchase.
A four-cell pack can cover multiple compatible players and still leave replacements for aging cells. It also reduces the need to source small individual gumstick batteries, which can be difficult to find in the correct format.
The broad model list is useful, but it is not a substitute for checking the original battery marking. Record the model number and compare dimensions and terminal polarity before installing a replacement in a valuable or rarely used player.
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The HQRP Portable CD/MD/MP3 Gumstick Battery is a single 1.2-volt, 1200mAh NiMH replacement cell. It carries a 3.9 rating and is explicitly positioned for Sony NH-14WM, NH14WM, NH-14WM(A), WM-EX921, and WM-609 devices, with a much wider list of compatible Sony and Panasonic model numbers.
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The listing describes the battery as a replacement for original gumstick cells, with compatibility extending across numerous D-E, MZ, NC, NH, NW-MS, TCM, WM, and Panasonic RP-BP series references. It is stated to be rechargeable up to 1000 times. Since only one cell is supplied, buyers needing a second device or a rotation set should choose the two- or four-pack alternatives.
No charger is included. That is manageable for someone restoring one player who already owns a suitable charger, but it is less convenient for someone beginning from nothing. Compatibility also should be checked through the original battery code rather than inferred solely from a broad listing description, especially for devices with modified compartments.
This single-cell option is best for replacing a single failed gumstick in a compatible portable CD, MD, or MP3 player. It provides a focused and relatively simple purchase, but the Milestock bundle offers a more complete package, while the HQRP multi-packs provide better rotation and device coverage.
One cell is all that is needed to repair a single compatible player. This keeps the purchase simple and avoids paying for extra batteries that would remain unused.
The battery will need a compatible charger or a device that can recharge the cell. Check your player’s charging arrangement before ordering, and never substitute a charger designed for a different battery chemistry without confirming its specifications.
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This rechargeable AA set includes four 2800mAh NiMH batteries and a four-slot charger. Its 4.4 rating is among the strongest in the list, and the stated battery capacity is high for a general-purpose AA package. It is designed for everyday devices such as cameras, game controllers, and smart-home products rather than gumstick-equipped portable media players.
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The charger is described as having advanced repair functionality for batteries damaged by excessive discharge, along with protection against short circuits and overvoltage. It automatically stops charging when the batteries are full. A portable, lightweight body makes the system convenient to carry, although the listed set focuses on AA rather than including AAA cells.
The significant limitation is again format. A 2800mAh AA cell is much thicker and longer than a gumstick cell, and a four-slot AA charger cannot charge the 1.2-volt NiMH gumstick format. The stated repair function should be treated as a feature of this specific charger, not as evidence that it can service a gumstick battery.
This is a compelling package for users who want high-capacity AA cells and a charger in one purchase. It is not a viable answer for a portable player requiring a flat gumstick battery, but its rating, four-cell quantity, and protective charging features make it useful for modern household electronics.
The 2800mAh rating is intended for products that consume meaningful power over time. The four included cells make it possible to maintain a ready rotation for compatible cameras, controllers, and other household equipment.
Automatic termination and short-circuit and overvoltage protection are useful safety features. They apply to the supplied charger and compatible rechargeable cells, so owners should use the designated charging system rather than assuming the protection carries over to an unrelated charger.
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The Milestock four-pack contains four 1.2-volt, 1400mAh NiMH gumstick batteries measuring approximately 67 by 17 by 6 millimeters. Its 4.2 rating is solid, and the 1400mAh capacity is higher than the stated capacity of the HQRP gumstick options. The package is designed for Panasonic, Sony, JVC, Sharp, Aiwa, Energizer, and iRiver portable-player applications.
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Its model coverage includes a wide selection of Sony NC, NH, MZ, WM, and NW-MS references; Panasonic HHF, RP-BP, RQ, RX, and SL references; and batteries used by JVC, Sharp, Aiwa, Energizer, and iRiver portable players. Four cells allow convenient rotation or support for several devices, making this an attractive option for collectors and households with more than one compatible player.
A charger is not included, so buyers need an existing gumstick charging solution or a separately sourced compatible charger. The physical dimensions are provided clearly, which is helpful because broad model support still does not eliminate the need for a fit and polarity check. The additional cell bulk may also matter in tightly fitted compartments.
This is a strong gumstick replacement pack for people who need multiple cells and prioritize the stated 1400mAh capacity. If a complete kit is the priority, choose the Milestock two-pack with charger instead. Either way, identify the original battery code and measure the compartment before ordering.
The 1400mAh specification gives this four-pack an advantage over 1200mAh gumstick alternatives. It may be particularly useful for maintaining several compatible players or keeping a healthy set of spares on hand.
The stated dimensions of 67 by 17 by 6 millimeters help buyers compare the cells with an original gumstick. Fit and terminal orientation should both be confirmed for older portable equipment.
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This Milestock two-pack provides two 1.2-volt, 1400mAh NiMH gumstick batteries with dimensions of approximately 67 by 17 by 6 millimeters. Its 4.1 rating is solid, and it combines the relatively high stated capacity of the four-pack with the convenience of a smaller, easier-to-manage quantity.
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The compatibility list covers extensive Sony, Panasonic, JVC, Sharp, Aiwa, Energizer, and iRiver model references. That makes it a plausible replacement for popular portable CD and MiniDisc players using the flat gumstick format. As with the Milestock four-pack, however, the list is broad enough that buyers should check the device’s original battery number rather than relying on a general product category.
The main drawback is that no charger is included. This is a meaningful limitation for anyone who wants one purchase to cover both replacement cells and charging. The two cells are also more suitable than a four-pack for a single-player rotation, helping avoid unnecessary extras.
Choose this option if you own one or two compatible portable players, want a straightforward pair of 1400mAh cells, and already have access to a suitable gumstick charger. For a first replacement that includes charging hardware, the Milestock two-pack with micro USB charger is the more complete and convenient choice.
Two cells provide enough material for rotation between a single player or two compatible devices. The pack remains simpler than a four-cell inventory while delivering a 1400mAh stated capacity.
Because the charging accessory is not included, budget for a compatible gumstick charger if your equipment cannot recharge the cell internally. Confirm the charger’s output is appropriate for 1.2-volt NiMH cells.
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The right replacement depends on both physical fit and charging method. Buyers should first distinguish a genuine gumstick cell from similar-looking batteries, then confirm the device model, charger requirements, and practical need for pack size or capacity.
Gumstick batteries are thin, flat rechargeable cells commonly used in portable CD, MiniDisc, MD, and MP3 players. They are not interchangeable with AA, AAA, or AAAA cells merely because some of those formats are also slim. Look for the exact battery code printed on the original cell, often beginning with a manufacturer-specific prefix such as NC, NH, MZ, WM, RP-BP, or MD-ST.
A replacement can have the right chemistry and still fail if its dimensions, terminal arrangement, or charging profile do not match the device. Use the manufacturer and model of the player as supporting information, but rely on the original battery number for a narrower comparison. Pay attention to variations within a model family, because similarly named devices may use different cell formats.
All of the relevant gumstick options in this comparison use 1.2-volt NiMH chemistry, which is widely used in these portable players. A charger designed for NiMH should not automatically be used with another chemistry. It is also important not to assume that a charger for standard AA cells can safely accept a gumstick cell merely because both may share a nominal voltage.
Only one of the closely relevant gumstick bundles in this list includes a matching charger. Other packs provide two or four replacement cells and require a separate gumstick-compatible charger or a player with a suitable charging dock. Compare the total requirements of the purchase rather than assuming the words “battery and charger” mean both components are present.
The gumstick products listed here provide stated capacities of either 1200mAh or 1400mAh. Higher capacity can be appealing for extended use, but it is not automatically better if the cell has the wrong dimensions or if the charger is designed for a lower-capacity original battery. Compare capacity alongside fit, charger output, and expected device requirements.
A single battery suits a one-device repair, while two cells make rotation convenient. Four cells are useful for multiple compatible players, collection, or service work. Larger packs reduce the need for separate small purchases, but they are unnecessary if the extra cells will sit unused. Check whether the product includes a charger before deciding that a larger battery-only pack offers better overall value.
The Milestock cells are listed at approximately 67 by 17 by 6 millimeters, while the HQRP listings emphasize compatibility with original gumstick cells. Measurements provide a useful cross-check, but the original battery marking remains the better guide. Pay particular attention to terminal position because a cell that fits physically can still be installed backward or discharge incorrectly.
Some portable players use a proprietary dock that charges the installed gumstick directly. Others may require a separate cell charger. A replacement does not necessarily include a dock, and the dock for one player may not be interchangeable with another. If your device cannot recharge a loose cell, prioritize a complete gumstick bundle that includes a correctly specified charger.
Before installing a replacement, record the original battery model, compare the cell’s dimensions, and confirm terminal polarity. If the player uses a proprietary charging cradle, make sure the new cell is compatible with that dock. For loose-cell charging, use only a charger specified for 1.2-volt NiMH gumstick batteries and observe its input and output requirements.
Charge the new cells according to the charger’s instructions. A charger with an automatic termination function may stop when it detects completion, but it should not be left under unusual conditions or operated with damaged, swollen, leaking, or visibly corroded batteries. Let a new cell complete an initial charge in a well-ventilated, dry location before relying on it for a long listening session.
Store gumstick batteries separately from loose metal objects, and use a case or the original compartment to prevent terminal contact. Avoid prolonged storage in a fully discharged state, high heat, or direct sunlight. Periodically inspect the cell and charger for swelling, discoloration, corrosion, loose contacts, or physical damage, and discontinue use if any of those signs appear.
A gumstick battery is a slim, flat rechargeable cell used in certain portable CD, MiniDisc, MD, and MP3 players. Common examples include Sony NC-5WM, NC-6WM, NH-9WM, and NH-14WM batteries. Its narrow dimensions distinguish it from standard AA, AAA, and AAAA cells, so the exact battery number should determine compatibility.
Usually not. AA chargers are designed around the physical dimensions and charging arrangement of AA cells, and a gumstick battery may not fit the slots or make proper contact. Use a charger specifically designed for 1.2-volt NiMH gumstick cells, especially when the charger’s output and termination behavior are not clearly documented.
A 1400mAh cell has a higher stated capacity, which can potentially support longer use before it needs recharging. It is only a better choice if it fits the device correctly, matches the expected charging system, and is compatible with the player’s requirements. Capacity cannot compensate for an incorrect battery format or polarity.
Not necessarily. A suitable charger should support the voltage, chemistry, dimensions, and connection arrangement of the gumstick cells being charged. Some bundles include a micro USB charger, while other products contain replacement cells only. Check the charger specifications and confirm whether your player uses a proprietary charging dock before buying a separate charger.
Open the battery compartment and look for the model printed on the original cell, such as NC-5WM, NH-14WM, WM-EX921, or RP-BP61. Also record the player’s brand and model and compare the new cell’s dimensions and terminal position. If the original marking is unreadable, search using the player model, then verify the suggested replacement against several specifications.
Only if you do not already have a suitable charging solution. Some gumstick packs include two or four replacement cells but no charger. A complete bundle can be more convenient for a new owner, while battery-only packs can work well with a proprietary player dock or an existing gumstick charger that is known to be compatible.
Those listings appeared in the broader rechargeable-battery comparison set, but they serve different devices. AA and AAAA products fit standard household electronics or styluses, while the Lancer product is a 9.6-volt airsoft pack. None should be treated as a direct substitute for a flat gumstick cell in a portable media player.
First confirm that the charger supports 1.2-volt NiMH gumstick cells and that the cell is seated correctly. Check the charger indicator and test it with a compatible cell known to work, if available. Inspect the battery and charger for corrosion, bent contacts, swelling, or damage, and discontinue using any component that appears unsafe.
The Milestock 2-Pack Battery and Charger is the most complete choice for the stated category because it includes two 1400mAh gumstick cells and a matching micro USB charger. The Duracell Ion Speed 1000 is the strongest general-purpose alternative for standard AA and AAA rechargeable devices, while the Lancer Tactical package serves a different premium need in airsoft equipment.
For a true portable media player replacement, prioritize the original battery number over capacity, then confirm the charger method. The HQRP two- and four-packs and Milestock battery-only packs offer strong 1200mAh or 1400mAh cell options, but they require an existing compatible charger. A buyer who already owns a suitable dock may get better practical value from replacement cells alone.
Ratings, product availability, and prices can change, so check the current listing and all compatibility information before ordering. Take particular care with older devices: compare model numbers, dimensions, and polarity rather than relying solely on a brand name. With those checks completed, the appropriate gumstick battery and charger can restore convenient use to a portable player while avoiding costly incompatibility.