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Two rectangular lithium-ion camera batteries with micro-USB ports, light-coloured plastic casings

Kastar

Kastar A-12 2-Pack Li-Ion 3.7V 7000mAh 25.9Wh Camera Battery

SKU CH-VC1A-EGZPF

Two 3.7 V 7000 mAh lithium-ion packs replace Arlo A-12 cells in Essential wire-free video doorbells and include over-charge, over-discharge and over-heating protection

  • Total capacity25.9 Wh
  • Pack contents2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 2 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Powers doorbell longer with 7000mAh high-capacity cells
  • Charges conveniently via Micro-USB cable without removing unit
  • Meets UL1642 and CE safety standards for reliable operation
  • Built-in protection guards against over-charge, over-discharge, over-voltage, over-current and over-heating
  • Two-battery pack replaces Arlo A-12 and compatible doorbell models

Two-pack Li-ion 3.7 V 7000 mAh batteries

This pack supplies two Kastar A-12 lithium-ion cells rated at 3.7 volts and 7000 milliampere-hours each. They are built as direct replacements for Arlo A-12 and 308-50025-03 batteries used in compatible wire-free video doorbells.

Micro-USB charging limits on-the-go top-ups

Each cell charges through a Micro-USB port, so replenishing power requires a cable and a USB power source rather than a dedicated dock. The chemistry delivers 25.9 watt-hours per unit, but the interface caps charging speed at standard USB rates.

7000 mAh capacity decides run-time per charge

The 7000 milliampere-hour rating is the single figure that determines how long a doorbell operates between charges. Buyers needing significantly longer intervals between recharges will find this capacity fixed by the cell design.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $36.99
Pricier than about 82% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameA-12
Part numberBA-2B-A12
Total capacity25.9 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How do I choose between the single battery and the 2-pack?

The listing is a 2-pack containing two identical 3.7V 7000mAh Li-Ion cells; you receive both batteries in one purchase.

What does the 7000mAh rating mean for my Arlo doorbell runtime?

Each 3.7V 7000mAh cell stores 25.9Wh, giving the doorbell substantially longer operation between charges compared with lower-capacity packs.

Does the built-in Micro-USB port charge at a specific current limit?

The battery includes a Micro-USB input and on-board protection against over-charge, over-discharge, over-voltage, over-current and over-heating.

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