8.4V 2S Li-ion Battery Charger DC 5.5×2.1mm US Plug 18650 21700

8.4V 2S Li-ion Battery Charger (DC 5.5 × 2.1 mm)

This charger is designed for 2S (8.4V) lithium-ion battery packs using 18650 or 21700 cells. It is ideal for DIY battery builders, compatible scooters, robotics, audio packs, and custom power projects.

Key Features

• Output Voltage: 8.4V DC (for 2S Li-ion packs)
• Standard DC 5.5 × 2.1 mm connector (center positive)
• Compatible with 18650 and 21700 battery packs
• US wall plug (100–240V AC input)
• Compact, lightweight, and easy to use

Compatibility Notes

• Designed for battery packs with a 2S BMS (8.4V max charge)
• Cell size does not affect charging as long as the pack is properly configured as 2S with a compatible BMS
• Not for 3S, 4S, or non-lithium batteries

What’s Included

• 1 × 8.4V 2S Li-ion Battery Charger

Selected by RenewSpark for DIY battery builders and technicians.

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