2.5A Lithium Battery Charger (LiIon-LiPO-LA) 20V max input no BMS (available in 2/3/4S LiIon/LiPO and 12V LA ).
NOTE. Shipped from our warehouse in Europe.
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2S 7.4V nominal, 8.4V when charged – 2x single 3.7/4.2V cells in series x parallel It is only suitable for Li-Ion & LiPO batteries with nominal voltage of 7.4V and charged voltage of 8.4V, DO NOT USE WITH OTHER BATTERY TYPES OR VOLTAGES Input voltage is 9-20VDC. DO NOT exceed input voltage.
It will tolerate voltages up to 24V and spikes up to 28V but its performance will be affected, more heat will be generated and it might not be stable. Using an old laptop adapter is an excellent choice, can be 12-19V supplying 3A min.
These devices will become hot when charging at full current