Home › Battery sizes › AAAA
AAAA battery
AAAA: 1.5 V alkaline cylindrical battery, 8.3 mm × 42.5 mm, about 600 mAh (900 mWh). Same battery: LR61, MN2500, E96, quadruple A.
1.5 Vvoltage
8.3 mmdiameter, 0.327 in
42.5 mmlong, 1.67 in
≈ 600 mAhcapacity
AAAA: what to know
- Mostly bought for stylus pens and penlights; NiMH rechargeable AAAA cells are 1.2 V.
AAAA equivalents
LR61MN2500E96quadruple A
- 25A: ANSI
What uses an AAAA battery?
- Stylus pens such as older Microsoft Surface Pens
- Penlights and laser pointers
- Some glucose meters
AAAA cells are also found stacked inside a 9V alkaline battery: six of them make 9 V.