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AudioVox CDM-130 Replacement Battery 3.7V 1000mAh Li-ion

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From $23.99 USD $29.99
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Fits AudioVox CDM-130, CDM-135, CDM-8100, and CDM-8150 mobile phones replacing OEM battery.
3.7V, 1000mAh Li-ion cell powers talk and standby time on basic handsets.
Connector slides into battery slot with positive terminal facing outward; locking tab secures pack.
We bench-tested this cell on a CDM-8100 unit; BMS accepted charge current without fault codes.
After installation, run one full discharge-charge cycle without attempting fast charging to let the fuel gauge IC recalibrate against the new cell's discharge curve.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

1000mAh

AudioVox CDM-130 / CDM-8100 Series — 3.7V Li-ion Replacement Battery

This 3.7V, 1000mAh Li-ion battery fits the AudioVox CDM-130, CDM-135, CDM-8100, and CDM-8150 handsets. It replaces the original cell when the phone no longer holds a charge through a full day of use. Capacity and voltage match the factory spec — 3.7V nominal, 3.7Wh total energy.

  • CDM-130, CDM-135, CDM-8100, CDM-8150 fit range: These four models share the same battery bay geometry, connector pinout, and 3.7V single-cell architecture. One cell covers all four without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on the CDM-8100 platform. The BMS accepted the charge current without tripping, and the protection circuit held cutoff at the correct low-voltage threshold.
  • Fuel gauge recalibration on first use: After installing this cell, run one complete discharge to auto-off, then charge uninterrupted to 100% before normal use. The CDM series fuel gauge IC maps its percentage readings against the discharge curve — skipping this step causes the percentage counter to drift against the new cell from day one.

Why the CDM-130 reports wrong battery percentage after a cell swap

The CDM-130 uses a coulomb-counting fuel gauge IC that builds its percentage model from the discharge curve of the installed cell. When you swap in a new cell, that learned curve no longer matches reality. The gauge continues reporting against old data until it runs a fresh full cycle. One complete discharge-to-cutoff followed by a full uninterrupted charge resets the reference curve and brings the percentage readout back into line.

Sudden shutdown at 20–25% on the CDM-8100 and CDM-8150

This is a voltage cliff failure, not a capacity problem. When the cell voltage drops below roughly 3.4V under the load of the radio transmitter, the protection circuit trips and cuts power — even though the fuel gauge still shows charge remaining. It happens because the fuel gauge percentage and the real cell voltage are out of sync. Run one full calibration cycle as described in the care tip above, and the shutdowns stop once the gauge learns where the actual voltage floor sits.

Compatible Models

CDM-130 CDM-135 CDM-8100 CDM-8150

Technical Specifications

Voltage3.7V
Amp Hours1000mAh
Capacity1000mAh
Rate3.7Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

  • Brand: AudioVox
  • Manufacturer: CS
  • Series: Standard
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My CDM-130 won't turn on at all after the replacement battery sat in a drawer for months — is the battery dead?

Almost certainly not dead — just locked out by the BMS. Li-ion cells in storage self-discharge, and if voltage drops below roughly 2.5V per cell, the protection circuit locks the battery to prevent damage. Connect the phone to a wall charger and leave it for 20–30 minutes without pressing the power button. The charge IC will trickle current into the cell until voltage recovers above the BMS re-enable threshold, then the phone will boot normally.

The percentage on my CDM-8100 jumps from 45% straight to 15% with no warning — what's happening?

The fuel gauge IC is still reading against the old cell's discharge curve, not the new one. These jumps happen at voltage inflection points where the new cell's curve diverges sharply from the stored reference. One full discharge-to-auto-off followed by a complete uninterrupted charge to 100% forces the coulomb counter to rebuild its curve against the actual cell. After that cycle, the percentage steps down smoothly instead of jumping.

The CDM-135 feels noticeably warm near the battery while charging the new cell — should I stop?

Some warmth is normal on the first few charge cycles. A new Li-ion cell has slightly higher internal impedance before it's been cycled, and the charge IC pushes current into that resistance, generating heat. If the back of the phone is warm but not hot to the touch, continue charging. If it becomes uncomfortable to hold or the phone shuts itself down, stop and let it cool to room temperature before resuming — then check that nothing is blocking the battery contacts causing elevated resistance.

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