BT-L2 7.4V 4300mAh Lithium-ion Battery for Topcon ES-600G and Hiper II Total Stations

The BT-L2 is a high-performance lithium-ion replacement battery specifically designed for Topcon ES-600G and Hiper II total station surveying instruments. With 4300mAh capacity and 7.4V output, this battery delivers reliable power for extended field operations.

Specifically engineered for use with:

• Topcon ES-600G Total Station
• Topcon Hiper II Total Station

Charge the battery fully upon first use. Allow 1-12 hours for complete charging depending on your charger type. Maximum performance is typically achieved after 2-4 full charge/discharge cycles.

Charge the battery as needed and avoid leaving it at low charge levels (below 15%) for extended periods.

Battery capacity naturally decreases over time due to usage, aging, and cell oxidation. This gradual reduction is a normal characteristic of lithium-ion technology.

Impedance increases with battery age, affecting performance and runtime even when energy remains available.

Lithium-ion batteries typically self-discharge 5% in the first 24 hours and 1-2% monthly thereafter. Higher temperatures accelerate this process.

Some devices may cut off before utilizing the battery's full voltage range, particularly under high current loads or elevated temperatures.