7.4V (2S) Li-ion Charger 8.4V 2A DC 5.5×2.1mm for 18650 21700 Battery Pack

2S 7.4V Li-ion Battery Charger – 8.4V Output (DC 5.5 × 2.1 mm) This CC/CV charger is designed for 2S (7.4V nominal) lithium-ion battery packs that charge to 8.4V max. Ideal for DIY battery builders, scooters, robotics, audio packs, LED projects, and custom power systems using 18650 or 21700 cells with a 2S BMS. Key Features Output: 8.4V DC (correct full-charge voltage for 2S Li-ion) Charging method: CC/CV (constant current / constant voltage) Connector: DC 5.5 × 2.1 mm (center positive) Compatible with 18650, 21700 and other Li-ion cells in 2S configuration US wall plug – 100–240V AC input Compact, lightweight, plug-and-play Compatibility Notes For battery packs using a 2S BMS (8.4V maximum charge) Works regardless of cell size as long as the pack is configured as 2 cells in series (2S) Not compatible with 3S, 4S, LiFePO₄, or non-lithium batteries What’s Included 1 × 2S Li-ion Battery Charger (8.4V output, DC 5.5 × 2.1 mm) Selected by RenewSpark for DIY battery builders and technicians who need a reliable 2S charger. Explore battery tools and calculators in the RenewSpark Tools app. lithium ion charger 2s 8.4v 7.4v 2a li-ion lipo battery charger 18650 21700 power adapter dc 5.5x2.1mm wall charger ac dc adapter

7.4V (2S) Li-ion Charger 8.4V 2A DC 5.5×2.1mm for 18650 21700 Battery Pack

2S 7.4V Li-ion Battery Charger – 8.4V Output (DC 5.5 × 2.1 mm)

This CC/CV charger is designed for 2S (7.4V nominal) lithium-ion battery packs that charge to 8.4V max. Ideal for DIY battery builders, scooters, robotics, audio packs, LED projects, and custom power systems using 18650 or 21700 cells with a 2S BMS.

Key Features

  • Output: 8.4V DC (correct full-charge voltage for 2S Li-ion)
  • Charging method: CC/CV (constant current / constant voltage)
  • Connector: DC 5.5 × 2.1 mm (center positive)
  • Compatible with 18650, 21700 and other Li-ion cells in 2S configuration
  • US wall plug – 100–240V AC input
  • Compact, lightweight, plug-and-play

Compatibility Notes

  • For battery packs using a 2S BMS (8.4V maximum charge)
  • Works regardless of cell size as long as the pack is configured as 2 cells in series (2S)
  • Not compatible with 3S, 4S, LiFePO₄, or non-lithium batteries

What’s Included

  • 1 × 2S Li-ion Battery Charger (8.4V output, DC 5.5 × 2.1 mm)

Selected by RenewSpark for DIY battery builders and technicians who need a reliable 2S charger.

Explore battery tools and calculators in the RenewSpark Tools app.

 

lithium ion charger 2s 8.4v 7.4v 2a li-ion lipo battery charger 18650 21700 power adapter dc 5.5x2.1mm wall charger ac dc adapter

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Immediate payment is required upon selecting "Buy It Now" or upon checking out through the cart.

We accept payment via U.S. PayPal accounts and all Major Credit Cards, Debit Cards & Google Pay.

We are legally required to collect sales tax in those states and localities where we maintain a physical presence (nexus).

The applicable amount of sales tax charged to an order will be calculated based on the shipment destination's state and local sales tax laws.

Thank you for shopping with us on eBay!

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