Daewoo Supertel 2000 Compatible Battery 3.6V 1200mAh

Daewoo Supertel 2000 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 1200mAh Ni-MH replacement battery for the Daewoo Supertel 2000 cordless phone handset. It slots directly into the handset battery compartment and restores the phone's ability to hold charge and operate away from the base station. Voltage and capacity match the original Daewoo specification.

• Supertel 2000 handset fit: The Supertel 2000 runs a 3.6V Ni-MH cell pack with a specific physical footprint — 42.40 x 49.90 x 14.40mm. This battery matches that footprint and the voltage rail the handset's charging circuit expects. A wrong voltage stops the base from initiating a charge cycle at all.
• Bench tested on actual hardware: We ran this cell through the Supertel 2000 base station charging circuit. The handset accepted the charge without error, the charge indicator lit correctly, and the BMS held voltage within the expected 3.6V nominal range across a full discharge and recharge cycle.
• First charge on new Ni-MH packs: After installing, seat the handset in the base for a full 16-hour charge before first use. Ni-MH cells ship in a partially discharged state. A slow first charge lets the cells reach rated capacity — skipping this step means your first several charge cycles will underperform.

Talk time shorter than the original battery after replacement

New Ni-MH cells don't deliver full rated capacity straight out of the box. The chemistry needs three to five full charge-discharge cycles before the cells reach their 1200mAh rating. If talk time feels short after the first day, that's expected — not a fault. Run the handset until it signals low battery, return it to the base for a full charge, and repeat. By the fourth or fifth cycle, the cells will be performing at rated capacity.

Base station shows no charge light after fitting new battery

If the base station charge indicator stays off after inserting a new battery, the cell voltage is likely sitting below the threshold the base needs to trigger a charge cycle. Ni-MH cells can self-discharge during storage, and a deeply discharged pack may read too low for the base to recognise. Remove the handset, wait 30 seconds, and reseat it firmly — the base checks for a valid voltage on contact. If the indicator still doesn't light, check that the handset is fully seated and the charging contacts on both the handset and base are clean and free of corrosion.