4-Slots Intelligent Universal Battery Charger for 3.7V IMR Li-ion 10440 14500 14650 16340 17670 18500 18650 18700 22650 20700 21700 22700 25500 26650 26700 Batteries

Basen BO4 is a intelligent charger with temperature adjustment function. The product has four independent charging channels, it can charge four lithium batteries at the same time. Users can choose different charging current to meet the needs of slow charge or fast charge. And the charger will display the status of each rechargeable battery when charging.

The product has special charge and discharge management circuit. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery, which makes users using the product without any safety concern.

With wide compatibility and strong practicality, this product can charge different types of DC 3.7V cylindrical lithium batteries.

Specifications:
Input: USB DC 5V-2A
Charging current:
0.5A 500m A±10%
1.0A 1000m A±10%
2.0A 2000m A±10% (Channel 4 only)
Max. Charge Voltage: 4.20±0.05V
Activate current: 10mA~20 mA, battery voltage <2.9V
External power supply standby current <20.0mA
Storage temperature: -40℃~+70℃
Usage environment: -20℃~65℃

Package Content:
1 X Basen BO4 Battery Charger
1 X Power Cord
1 X User Manual
1 X Warranty Card

• Users can press the current switch button on the right side of the product to switch 0.5A / 1A / 2A these three current modes to meet the needs for different specifications of 3.7V cylindrical lithium battery charging. (DC 5V/2A adapter is required for our chargers' 100% performance, fast charging and stable indicator display)..
• When the charger is in the charging or standby status, the product protection function will start if the positive and negative anodes of the battery becomes short circuit, cross-short circuit, or the battery itself short circuit, or the direction of the positive and negative anodes of the battery reverses, the charger will not be damaged..
• When the charger is in standby status, correctly put the low voltage battery (battery voltage ≤ 2.9V) to the charging channel, the charger’s charging function will start, and then activate the low voltage battery automatically..
• When the battery is full, the charger starts overcharge protection and stops charging automatically. If not remove the battery for a long time after charging, the charger will consume a certain a of battery power. When the battery voltage is lower than 4.0V, the charger restarts the charging function..
• The product applies to IMR/Li-ion: 10440 14500 14650 16340 16650 17650 17670 18350 18490 18500 18650 18700 22650 20700 21700 22700 25500 26650 26700 (Not for AA or AAA batteries)..