- The LR52 / A640 is a mercury-free replacement for the MR9 cell that was commonly used in cameras and carriage clocks. Mercury cells are now banned because of toxicity and environmental fears.
- The LR52 / A640 cells produce 1.5 Volts, which is higher than the 1.35V produced by the original mercury cell. Most devices accommodate the small increase in voltage and function properly.
- Replacement For the following: PX640A, A640PX, EN640A, EPX640A, PC640A, LR52, 1126A, PX640, EPX640, V640PX, H-N, E640N, MR52, NR52, 1126MP
KX640 Battery is compatible with the following models:
E640N, PX640AB, E140, RM640R, EN640A, V640PX, PC640A, RM640, EPX640, A640PX, PX640A, MR52, E640, RPX640, A640, 1126MP, 1105M, NR52, 960-0374, EPX640A,
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