LaskaKit Li-Ion Battery 2x18650 1S2P 3.7V 6400mAh

Product detailed description

Original LaskaKit 4S1P battery pack assembled from two 18650 cells (1S2P configuration) with a nominal voltage of 3.7V and a capacity of 6400mAh. The battery is equipped with a protection circuit that protects individual cells against overcharging, over-discharging, and short circuits. The battery pack is suitable for projects requiring higher capacity with compact dimensions and stable performance.

The battery is delivered partially charged (approx. 60-80%) for optimal storage. We recommend a full charge before first use. If you do not measure voltage at the output after delivery, connect the battery to a charger – this will activate the protection circuit.

The battery includes a protection circuit that maintains the battery's voltage, preventing it from becoming too high (overcharging) or too low (over-discharging), meaning the battery will be disconnected once discharged to 3.0V. This circuit also protects the battery from short circuits. However, even with this protection, it is very important that you only use a LiIon / LiPoly CV/CC charger. We recommend using our TP4056 Li-ion cell charger.

Specifications:

• Model: 2x18650 1S2P
• Cell Type: GeB Li-Ion 18650
• Configuration: 1S2P
• Nominal Voltage: 3.7V
• Fully Charged Voltage: 4.2V ±0.05V
• Capacity: 6400mAh
• Max. Continuous Discharge Current: 6.4A (1C) – for direct connection; 2A when using the fitted JST-PH connector (connector limited)
• Recommended Charging Current: 1280mA (0.2C)
• Fast Charging: 3.2A (0.5C) – for direct connection; 2A when using the fitted JST-PH connector (connector limited)
• Charging End: 65mA
• Min. Discharge Voltage: 2.75V
• Charging Method: CC/CV
• Protection Circuit: Yes (overcharge, over-discharge, short circuit protection)
• Operating Temperature – Charging: 0 to 45°C (below 10°C max. 0.25C)
• Operating Temperature – Discharging: −20 to 60°C
• Dimensions: 66 × 37 × 20mm
• Weight: 100g
• Cable: 100mm silicone wire with JST-PH-2 connector

Package contents:

• 1x LaskaKit Li-Ion Battery 2x18650 1S2P 3.7V 6400mAh

Important Notice and Safety:

• The user bears full responsibility for the correct connection, charging, and use of the battery.
• Charge exclusively with a charger designed for 1S Li-Ion batteries (4.2V CC/CV).
• Do not use NiMH/NiCd chargers or other incompatible sources.
• Never short-circuit the battery terminals or damage it mechanically (drop, dent, puncture).
• Do not charge or use unattended.
• Do not expose to high temperatures, direct sunlight, fire, or moisture.
• Use only in devices with appropriate current, voltage, and thermal protection.
• In case of swelling, odor, overheating, or other abnormalities, stop using the battery immediately.
• Always insulate the contacts against short circuits before disposal.

Notes:

• This product is not a standalone functional unit and may require professional installation.
• Photos are illustrative and may differ slightly from the actual product.