Replacement battery for ListenTALK LK-1, LKR-11 and LKR-12 devices. Listen Technologies’ LA-365 Rechargeable Li-ion Battery offers a combination of extended charge life and quick charging. Consistent, reliable, and long-lasting power make the battery a cost-effective choice while reducing the expense and environmental costs associated with frequent alkaline replacement. • Environmentally friendly and long lasting • Quick to recharge • Each battery is backed by a one (1) year warranty SPECIFICATIONS Battery Type: Lithium-ion NP60 Battery Charging Time: From discharged to fully charged in 2 - 2.5 hrs Battery Capacity: 1200 mAh Battery Voltage: 3.7 V Battery Cycle Life: 3,750 - 4,700 Discharge Cycles @ 10% Depth of Discharge (DoD) before battery capacity drops to 70%, 2,000 - 2,500 @ 25% DOD, 1,200 - 1,500 @ 50% DoD, 300 - 500 @ 100% DoD Battery Operating Time: Typically 8 - 9 hrs. 6 - 8 hrs. Shipping Weight: 1.0 lbs. (0.5 kg) Weight: 0.92 oz. (26.0 g)