8.4V 5A Lithium Battery Charger – DC 5.5x2.1mm US/EU Plug
8.4V 5A Lithium Battery Charger – DC 5.5x2.1mm US/EU Plug
8.4V 5A Intelligent Lithium Battery Charger
Keep your lithium-ion and lithium polymer batteries topped up safely and efficiently with the lamakoki 8.4V 5A Lithium Battery Charger. Designed for universal compatibility, this CE-certified smart charger delivers fast, reliable charging with built-in multi-layer safety protections — making it a dependable choice for power tool battery packs, e-bikes, robotics, and DIY energy projects.
Key Features
- Universal AC Input: AC 100–240V, 50/60 Hz — compatible with US, EU, AU, and UK wall outlets
- Charging Output: DC 8.4V at 5A for fast, efficient top-ups
- CC-CV Charging Mode: Constant Current / Constant Voltage for optimal battery health and longevity
- LED Charge Indicator: Red light = charging in progress; Green light = fully charged — no guesswork needed
- DC 5.5 x 2.1mm Connector: Standard barrel connector for wide device compatibility
- Intelligent Quick Charge: Built-in smart circuitry adjusts current for efficient, worry-free charging
- CE Certified: Meets European safety and electromagnetic compliance standards
Multi-Layer Safety Protection
- Over-Voltage Protection (OVP): Prevents output voltage from exceeding safe limits
- Over-Current Protection (OCP): Input current exceeding 5A triggers automatic fuse cut-off to protect internal circuitry
- Overload Protection: Safeguards against excessive power draw
- Short-Circuit Protection: In the event of improper use, output current is automatically limited to 200mA or less to prevent damage
- Battery Current Limiting: Charging current is maintained within a safe range to preserve battery performance and lifespan
Specifications
- Input: AC 100–240V, 50/60 Hz
- Charging Voltage: DC 8.4V
- Charging Current: 5A
- Output Power: 37.5W – 50W
- Connector: DC 5.5 x 2.1mm
- Charging Mode: CC-CV
- Compatible Battery Types: Lithium-ion (Li-ion), Lithium Polymer (LiPo)
- Certifications: CE
- No display screen; no data transmission
- Made in Mainland China
Compatible With
This charger is ideal for 2S lithium battery packs used in power tools, mobility devices, robotics, RC vehicles, and custom battery systems requiring an 8.4V DC 5.5x2.1mm input.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What types of batteries is the 8.4V 5A lithium battery charger compatible with?
A: This charger is designed for lithium-ion (Li-ion) and lithium polymer (LiPo) battery packs that require an 8.4V DC charging voltage — typically 2S lithium battery configurations used in power tools, e-bikes, RC vehicles, and DIY electronics projects.
Q: Does this lithium charger work with international wall outlets?
A: Yes! The charger accepts AC 100–240V input at 50/60 Hz, making it compatible with electrical standards worldwide. It comes with US and EU plugs; AU and UK plug versions are also available — simply message us if you need a different plug specification.
Q: How do I know when my battery is fully charged?
A: The built-in LED indicator makes it simple: a red light shows that charging is actively in progress, and a green light indicates that your battery is fully charged and the charger has completed the CC-CV charge cycle.
Q: What safety protections does this charger include?
A: The lamakoki 8.4V 5A charger features over-voltage protection (OVP), over-current protection (OCP), overload protection, and short-circuit protection. In the event of a short circuit or improper connection, output current is automatically capped at 200mA or less to prevent damage to your batteries and devices.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.