🔋Charging without a charger
XTAR 21700 5000mAh lithium-ion battery with a built-in USB-C port is a convenient and modern power source for flashlights, electronic devices, and equipment using 21700 cells. Just a regular USB-C cable is needed to charge the battery – without the need for an additional charger.
Main advantages
✅ Direct charging via USB-C port
✅ Does not require an external Li-Ion charger
✅ Can also be charged in a classic Li-Ion cell charger
✅ Built-in LED indicator showing charging status
✅ Capacity of 5000 mAh ensuring long operating time
✅ Maximum continuous discharge current up to 10A
✅ Built-in PCM protection to safeguard the battery and device
✅ Over 800 cycles of charging and discharging
✅ Flat positive terminal (Flat Top)
✅ UN38.3 certification – safe transport
⚡Safe use every day
The battery is equipped with a PCM protection circuit that effectively protects the cell from:
- overcharging,
- excessive discharging,
- overloading,
- short circuit.
Thanks to this, you can use the battery safely and extend its lifespan.
🔌Charging via USB-C
The built-in USB-C port allows you to charge the battery practically anywhere – from a phone charger, power bank, computer, or car charger.
LED indication:
🔴 Red LED – charging is in progress
🟢 Green LED – the battery is fully charged
⚡Two charging methods
You can choose the most convenient method:
- through the built-in USB-C port,
- with a dedicated charger for Li-Ion batteries.
This solution provides maximum convenience both at home and while traveling.
⚠️Warning
The maximum continuous discharge current is 10A. Before use, ensure that the battery parameters match the requirements of the powered device.
📈Technical Data
- Manufacturer: XTAR
- Model: 21700 5000mAh USB-C Protected
- Cell type: Li-Ion (lithium-ion)
- Size: 21700
- Typical capacity: 5000 mAh
- Nominal voltage: 3.6 V
- Maximum voltage: 4.2 V
- Cut-off voltage: 2.5 V
- Charging port: USB-C
- USB charging voltage: 5 V
- USB-C charging current: 1.2 A
- Charging current in Li-Ion charger: 2.5 A
- Charging time via USB-C: approximately 3.3 hours
- Charging time in charger: approximately 2.9 hours
- Maximum continuous discharge current: 10 A
- Protection: PCM (overcharge, over-discharge, overload, short circuit)
- Operating temperature: from -20°C to +60°C
- Dimensions: 21.5 × 75.5 mm (±0.2 mm)
- Positive terminal type: Flat Top
- Life span: approximately 800 cycles
- Weight: 83.5 g


- 10,0
- 4,20(±0.03V)
- 10,0
- 4,20(±0.03V)
5th Floor, No.77 Xinhe Rd, Shangmugu
518000 Shenzhen
Chiny
Email: info@xtar.cc
Telephone: (+86) 755-25507076
Geodetów 24
80-298 Gdańsk
Polska
Email: contact@baltrade.eu
Telephone: 58 552 20 20



































