We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four rectangular lithium-ion camera batteries with micro-USB ports

Kastar

Kastar A-12 4-Pack 3.7V 7000mAh Camera Battery

SKU CH-3XGY-WC1VX

Four lithium-ion batteries rated at 3.7V 7000mAh 25.9Wh power compatible Arlo wire-free video doorbells with built-in protection circuits

  • Total capacity25.9 Wh
  • Pack contents4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 3 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Four-pack keeps multiple doorbells powered
  • 7000mAh capacity extends time between charges
  • Built-in protection circuits guard against over-charge and over-heat
  • Meets UL1642 and CE safety standards
  • Micro-USB charging adds convenience for Arlo Essential Wire-Free Video Doorbell

Four-Pack Replacement for Arlo Doorbells

This Kastar A-12 set supplies four lithium-ion cells rated at 3.7V and 7000mAh each. They are built as direct replacements for the Arlo A-12 battery and the listed Arlo part numbers including 308-50025-03 and A6E31BA7014F7. The pack suits owners of compatible Arlo Essential Wire-Free Video Doorbell models such as VMA2400, AVD2001, AVD2001B, FC9C98018288, ABY11CKS016CD and 272-50114-01.

Upgrade from Lower-Capacity Cells

The 25.9Wh capacity extends operating time between charges compared with lower-rated alternatives. Integrated protection covers over-charge, over-discharge, over-voltage, over-current and over-heating. Buyers who need a single spare or a different form factor will not be served by this four-pack configuration.

Micro-USB Charging Constraint

Each cell charges via Micro-USB, so the doorbell or an external charger must provide that interface. The chemistry meets UL1642 and CE safety standards. Users whose doorbell hardware requires a proprietary dock or a different voltage cannot use these batteries without an adapter.

How it compares

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

Price $67.99
Pricier than about 90% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameA-12
Part numberBA-4B-A12
Total capacity25.9 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 3 in
In the box
Pack contents4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

What are the exact dimensions of each A-12 battery so I can confirm it fits my Arlo doorbell compartment?

Each battery measures 3 by 2 by 3 inches, matching the original Arlo A-12 form factor for the listed doorbell models.

How do I charge the four batteries and what common step should I avoid?

Charge each pack via its built-in Micro-USB port using a standard 5 V adapter; do not attempt to charge the doorbell with the batteries still inserted.

When should I expect to replace the 7000 mAh cells in my Arlo Essential Wire-Free Video Doorbell?

Replace the set when runtime drops noticeably below the original 25.9 Wh capacity, typically after several hundred full charge cycles.

More in Camera Batteries, Grips & Chargers

Similar items