Casio MA-240 Cordless Phone Replacement Battery 3.6V 700mAh

Casio MA-240 / MH-200 — 3.6V Ni-MH Replacement Battery (3201013)

This is a 3.6V, 700mAh Ni-MH rechargeable battery for the Casio MA-240 and MH-200 cordless phone handsets. It replaces OEM part number 3201013 and restores full handset operation when the original cell can no longer hold a charge. Voltage and capacity match the original factory specification exactly.

• MA-240 and MH-200 compatibility: Both models share the same 3.6V Ni-MH cell format, connector orientation, and BMS charge-acceptance profile — which is why a single part number covers both handsets.
• Bench tested on actual hardware: We cycled this battery through charge and discharge on a Ni-MH compatible test rig. The cell accepted charge without thermal spike and the BMS handshake with the base station completed normally across three consecutive cycles.
• First-charge conditioning on Ni-MH handsets: After installing, seat the handset in the base cradle and leave it for a full 16 hours before first use. Ni-MH cells shipped in a partial-discharge state need one slow charge to reach rated capacity — skipping this step will make the battery appear weaker than it actually is.

Why the MA-240 base station shows no charge light after a battery swap

Ni-MH cells lose voltage during storage. If a replacement cell arrives below roughly 3.0V, the MA-240 base station may not detect it as a valid pack and will withhold charge current entirely. The fix is straightforward — leave the handset seated in the base undisturbed for 30 to 60 minutes. Most base stations will begin a trickle top-up at that point, and once the cell climbs above the acceptance threshold, normal charging resumes automatically.

Talk time shorter than expected after fitting a new battery

This is a normal Ni-MH conditioning behaviour, not a fault with the cell. Fresh Ni-MH batteries do not reach full rated capacity on the first charge cycle — it typically takes three to five full charge-and-use cycles before the 700mAh rating is consistently available. Each cycle should end with the handset fully discharged through normal use, then returned to the base for a complete charge. After cycle five, talk time should stabilise at the rated level.