Wintonic Buttler 200 Replacement Battery 3.6V 700mAh

Wintonic Buttler 200 — 3.6V Ni-MH Replacement Battery

This is a 3.6V 700mAh Ni-MH replacement battery for the Wintonic Buttler 200 cordless phone handset. It slots into the handset to restore wireless operation when the original cell has degraded past useful capacity. Voltage and footprint match the factory cell at 45.90 × 31.20 × 10.70mm.

• Buttler 200 handset fit: The Buttler 200 runs a single-cell 3.6V Ni-MH pack with a compact flat profile. This cell matches that voltage rail and physical envelope — no modification needed to seat it in the battery bay.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Ni-MH compatible charger and confirmed the BMS accepted charge without fault, held voltage through standby draw, and delivered rated capacity by the third conditioning cycle.
• First-charge protocol for Ni-MH cordless phones: After installing, place the handset in the base for a full 16-hour charge before first use. Ni-MH cells in cordless phones ship partially discharged and need a slow initial charge to reach rated capacity — a short charge first will leave usable capacity on the table.

Talk time shorter than original battery after replacement

Ni-MH cells don't deliver full rated capacity straight out of the pack. The chemistry needs three to five full charge-discharge cycles before the cell reaches its 700mAh rating. On cycle one, expect noticeably shorter talk time — this is normal cell behaviour, not a fault. Run the handset until it drops, return it to the base for a full charge, and repeat; talk time increases with each cycle.

Base station showing no-charge or error light on new pack

Cordless phone bases look for a minimum voltage before starting the charge cycle. A Ni-MH cell that has sat in storage can drop low enough that the base rejects it as a fault rather than charging it. If the error light shows immediately after install, remove the handset, leave it out for 30 seconds, then re-seat it firmly — sometimes one contact cycle is enough for the base to re-read the pack voltage and begin charging. If the error persists, the cell voltage may be below 3.0V; a short top-up on an external Ni-MH charger at 100mA is enough to bring it above the acceptance threshold.