10 Best Replacement Motherboard Cmos Battery in 2026

The seller states that the product is tested before shipping and recommends replacement while the laptop is in the off state. Those statements provide useful procedural guidance, especially for a component connected directly to the motherboard. The CR1220W designation also gives buyers a concrete specification to compare with the original cell, although the supplied data does not separately state voltage, capacity, or connector details.

The main weakness is limited evidence for social proof. No numerical customer rating is available, and the product information does not identify a warranty duration. The seller asks buyers to confirm that the laptop model and part number are completely consistent, which is appropriate but leaves some of the verification work to the customer. Buyers should also compare the original cell's dimensions and attachment method.

Choose this option if the laptop is an ASUS Q504 or Q524, especially when the original board carries a CR1220W cell and its appearance matches the product images. It is not a broad ASUS replacement, and it would be a poor choice for a ZenBook, VivoBook, or other ASUS family. Confirm the model label and physical connector before opening the computer.

Targeted Compatibility Reduces Guesswork

The product is concentrated around Q504 and Q524 models instead of claiming support for an entire brand. This focused description makes it easier to decide whether the listing deserves closer inspection.

Safe Handling Starts with Power Off

The seller specifically recommends changing the battery while the machine is off. The laptop should also be disconnected from external power, and internal battery procedures should follow the manufacturer's service guidance.

The product carries a 4.0 customer rating and a six-month PCRepair warranty. Those two details make it more informative than listings that provide neither customer feedback nor a support period. The focused Dell list also offers a practical alternative to choosing a universal battery based only on coin-cell dimensions, which is important because motherboard connectors and cable arrangements can differ.

Electrical details such as voltage and capacity are absent, and the compatibility list emphasizes several older Inspiron families while naming only one Latitude model. Buyers should therefore treat the model list as a firm boundary rather than a suggestion. The shared appearance of some images in the guide does not establish interchangeability, and the original battery should be opened only with suitable tools and static-handling precautions.

This product is a reasonable recommendation for a Dell owner whose full model number appears in the list and whose battery carries 23.21212.031. The warranty makes it a more complete purchase than an unrated generic alternative. If the original component looks different, has another part number, or sits in a different board location, do not force it into place.

Specific Dell Models Improve Relevance

The listing identifies six Inspiron models and the Latitude 3470, giving shoppers a concrete set of compatible machines. Checking the full model printed on the laptop is more reliable than selecting from a general Dell category.

Original Part Number Supports Verification

Part 23.21212.031 appears in the product details and can also be used to search the manufacturer's parts references. A matching number should be confirmed against the physical battery and its connector.

The seller states that the product is tested before shipping and provides clear instructions to replace a faulty, cracked, or broken component while the laptop is off. The CR2016W designation gives the listing a useful technical identity. However, no numerical customer rating or explicit warranty period is provided, so the listing offers less evidence about long-term owner satisfaction than the rated products in this comparison.

Compatibility is still a major concern because the title includes many models and several unusual punctuation marks that can make searching less convenient. A buyer should locate the exact model suffix and compare the original cell's dimensions, leads, and socket. A rechargeable RTC cell may also require the original system to include the correct charging circuit; battery shape alone does not answer that question.

This replacement is best suited to owners of the named ProBook and Stream configurations, particularly organizations that recognize the CR2016W part in their inventory. It is not a universal HP solution. Verify the complete model, part number, connector, and charging arrangement before purchase, and follow the manufacturer's disassembly instructions rather than relying solely on the seller's brief installation note.

Useful for Mixed HP Fleets

A single listing covering many ProBook and Stream variants can simplify fleet maintenance. Technicians should still record each device's exact suffix because a shared family name does not guarantee identical board layouts.

CR2016W Designation Guides Comparison

The specified cell type is valuable when the original battery is difficult to identify by appearance alone. It should be combined with checks of the connector and charging circuit, not used as the sole compatibility test.

The replacement has a 4.1 customer rating and is backed by a six-month PCRepair warranty. Together, these details indicate that the listing includes both customer feedback and a stated support period. Its small, defined target audience may also make the product easier for technicians to stock and distinguish from general-purpose CMOS cells.

The major limitation is scope: it should not be considered for other ZBook generations, ordinary ProBooks, or other HP systems simply because they use a similar coin-cell format. Voltage and capacity are not provided in the supplied information, and workstation internals can be complex to service. Users should consult HP service documentation, protect the board from electrostatic discharge, and avoid flexing cables or connectors.

This is a sound choice specifically for owners of the ZBook 14 G2 or ZBook 15u G2 whose original RTC battery carries part 665733-001. Its customer rating and stated warranty make it better documented than several unrated options. If the part number or physical connector differs, search for the battery designed for that workstation instead of stretching this listing's stated compatibility.

Workstation Fit Is Deliberately Narrow

The product names only two closely related ZBook models. That narrow definition makes accidental cross-model ordering less likely when the buyer reads the listing carefully.

Part Number Simplifies Inventory Checks

Part 665733-001 allows a technician to match the replacement against the existing component. This is a more dependable selection method than comparing general battery photographs.

The listing carries a 3.9 customer rating, which places it among the products with visible customer feedback. Rechargeable chemistry can be attractive in systems designed to recharge an RTC cell, since the motherboard charging circuit may replenish it during normal operation. The clearly stated electrical specifications also make it possible to rule out cells intended for a different voltage class.

However, the product data does not identify any compatible laptop models, connector type, physical dimensions, or included leads and adapters. It is also unclear whether the package contains one battery or a group of cells despite the plural wording in the title. The 3.9 rating is acceptable but not exceptional, and users who rely on the cell in a system with an incompatible charger or connector could encounter installation problems.

This is a specialist option for technically confident buyers who can independently verify the 3.6V Ni-MH specification, physical size, charging circuit, and connector. It is not a convenient choice for someone searching only by laptop model. For those shoppers, one of the model-specific replacements with a clear part number will usually offer a more straightforward path to compatibility.

Electrical Details Support Technical Matching

The 3.6V and 40mAh figures allow an informed comparison with the original RTC cell. They do not establish laptop compatibility on their own, so physical and charging-circuit checks remain essential.

Rechargeable Chemistry Requires System Support

A rechargeable Ni-MH cell is appropriate only when the original design and charging arrangement support it. Installing it in a system intended for a primary-cell coin cell can be unsafe or unreliable.

The seller states that the product is tested before shipping and notes that faulty, cracked, or broken batteries can be replaced while the computer is off. The listing also invites buyers to contact the seller if they cannot locate the required model. The CR1220W designation provides a useful cell reference for comparison with the original motherboard component.

No customer rating is available, and the supplied information gives no warranty duration, voltage, capacity, or detailed connector description. The broad list also creates a greater need for careful checking because several model names and series are close together. A buyer should inspect the existing battery, check its dimensions and leads, and consult the laptop's service information before making a purchase.

This product is recommended for an ASUS owner whose exact model appears in the title and whose motherboard uses a CR1220W assembly. It is less attractive than a model-specific choice when one is available because it lacks a rating and stated warranty. Nevertheless, its wide ASUS coverage can be useful for technicians, provided compatibility is verified through the complete model suffix and original part information.

Wide ASUS Range Serves Owners

The listing includes several ASUS product families that may otherwise require separate searches. Exact model verification is essential because the battery layout can differ even within a visually similar series.

Seller Assistance Can Resolve Uncertainty

The seller offers to help buyers locate a matching item when the model is unclear. This can be useful, but the buyer should provide the full model suffix and a clear image of the existing battery and connector.

The 4.8V rating is notably different from the 3.6V cell elsewhere in this guide, emphasizing why buyers should not choose a replacement by general appearance alone. The chemistry is also clearly identified. If the original motherboard system uses a rechargeable 4.8V Ni-MH cell with matching physical dimensions, the specification provides a logical basis for compatibility.

The product has a 1.0 customer rating, the lowest supplied rating among these choices, and the data offers no model compatibility, connector details, or warranty information. A low aggregate rating does not automatically make a battery defective, particularly for a narrowly used electronic component, but it provides less confidence than the 4.0-to-5.0 ratings attached to several alternatives. It may also require adaptation to the original leads and holder.

This is a specialist replacement for a buyer who can positively identify the original cell as a 4.8V Ni-MH unit and can reproduce or safely adapt the connection. It is not the best starting point for someone who only knows the laptop brand. In most cases, a model-specific listing with a documented part number will reduce uncertainty and make installation more predictable.

Dimensions Enable Precise Comparison

The stated 11.8-by-22-millimeter size lets owners compare the replacement with the original cell before ordering. Height, diameter, and lead position should all be checked.

Low Rating Calls for Extra Verification

A 1.0 customer rating is a meaningful caution. Buyers should investigate the original component, connector, and warranty terms rather than treating the listing as a drop-in choice.

The battery is identified as a 2.4V, 20mAh Ni-MH unit, giving buyers more than a broad product name with which to compare an original cell. The listing also states a 200-day warranty, which is notably longer than the six-month repair coverage stated for several model-specific alternatives. Those details make the product especially attractive for owners of older Toshiba notebooks that depend on a rechargeable RTC design.

The tradeoff is that the compatibility list is primarily historical, concentrating on older Satellite families rather than current premium laptops. The supplied data does not specify connector dimensions, lead length, or mounting details. Furthermore, the listed part references appear as specific model-based entries rather than one simple part number. Buyers should still compare the original battery and verify the full model before installation.

This is an excellent recommendation for owners of the named Toshiba Satellite systems who want a well-rated, clearly specified, and long-warranted RTC replacement. It may also serve as a sensible choice for a technician who recognizes one of the listed model variants. It should not be assumed to fit an unrelated Toshiba notebook, and the model label plus original physical connector must be confirmed.

Top Rating Supports Confidence

The 5.0 customer rating is the strongest numerical result in the supplied product data. It should be considered alongside fit and specifications, but it is reassuring for buyers choosing among otherwise specialized replacements.

Detailed Specifications Simplify Comparison

The 2.4V and 20mAh Ni-MH specification makes it easier to determine whether the battery resembles the original. The dimensions and connector still need to be checked before purchase.

Long Warranty for Older Systems

A stated 200-day warranty provides a defined support period for a component expected to support long-term RTC operation. Buyers should keep the receipt and follow the seller's claim process if a defect occurs.