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Rectangular black lithium-polymer watch battery, model A2181

KingSener

KingSener A2181 replacement battery 44mm 1.129Wh 3.814V

SKU CH-EQ62-GK7ZM MPN A2181

Replacement lithium-ion polymer battery rated 1.129 Wh at 3.814 V for 44 mm Apple Watch SE and Series 5 models

  • Battery voltage rating3.814 V
  • Battery capacity1.129 Wh
  • Designed for Apple Watch Series 5 and SE 44mm models
  • 129Wh capacity restores original runtime between charges
  • 814V Li-ion polymer cell matches factory voltage spec
  • CE and RoHS certified for safety and environmental compliance
  • Replaces part numbers A2181 A2093 A2095 A2157 A2352 A2354

Replacement battery for 44mm Apple Watch SE

The KingSener A2181 is a lithium-ion polymer cell rated at 1.129Wh and 3.814V, built as a direct replacement for the original battery in 44mm Apple Watch SE and Series 5 models. It carries CE and RoHS certification and is supplied new with a one-year warranty.

Snap-in cell restores original runtime without

The battery matches the factory form factor and connector layout for part numbers A2181, A2093, A2095, A2157, A2352 and A2354, so it seats in the existing compartment and plugs into the board without adapters. Black casing matches the internal finish and the certified cells are tested for consistent discharge.

Swaps a depleted pack in SE or Series 5 44mm units

Owners of a 44mm Apple Watch SE or Series 5 whose battery no longer holds a charge can restore full-day runtime with this module. The repair requires opening the sealed case, so buyers without the tools or experience for micro-electronics disassembly should seek professional installation.

How it compares

Measured against everything we stock in Smartwatches & Fitness Watches, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 95% of the 346 comparable items (median $82.49).

Specifications

Product
Brand nameKingSener
Model nameA2181
Part numberA2181
A2093
A2095
A2157
A2352
A2354
Power
Battery voltage rating3.814 V
Battery capacity1.129 Wh

Questions about this item

What voltage and capacity does the A2181 cell deliver?

The lithium-ion polymer cell is rated at 3.814 V and 1.129 Wh, matching the original Apple Watch SE 44 mm specification.

Which Apple Watch models does the A2181 battery fit?

It replaces part numbers A2181, A2093, A2095, A2157, A2352 and A2354 in Apple Watch Series 5 44 mm and Apple Watch SE 44 mm.

What tools and preparation are needed to install the A2181 battery?

You need a pentalobe screwdriver, a Y-type tri-point driver, tweezers, a heat source to soften the display adhesive, and fresh waterproof adhesive strips for resealing.

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