Lithium Ion, Lithium Polymer Charger, DC-DC input, 3A

• 3 step charge control with current detection as charge termination
• Switch mode charger with universal input voltage
• Protected against reverse polarity and short circuit
• Charges 3-8 cell battery packs
• Waterproof (IP67) version available
• LED status indicator
• Custom specifications on request

Model number 452544-L Series
Input rating Nominal 10-30VDC
Maximum output power 35W
Cell count 1-8 cells
Switch frequency ≈ 40kHz
Leakage current from battery <1 mA
Operating/storage temperature -20°C - +40°C / -25°C - +85°C
Ripple < 100 mV p-p
EMC standards 61204-3, 61000-6-1, 61000-63
Input connection Stripped & tinned leads
Output connection 2.5mm x 5.5mm x 9mm barrel plug, center positive*
Dimensions/weight 4.22” x 2.64” x 1.44” (107 x 67 x 36.5mm) / .55 lbs. (250g)

Once the charger is attached to a lithium ion battery and then plugged in, the charging process will begin. The charger will subject the lithium ion battery to three steps of charging.

During the first step, the charger enters into ‘fast charge’ mode. During this step, the charger is in constant current mode with the current rate remaining at its maximum rating.

In step two, the charger is in constant voltage mode (current is no longer being delivered at its maximum rate). The battery is nominally 80-95% charged when the LED indicator changes to orange. The charger stays in this mode until the charge current decreases to the charge termination level.

In the third step, the charge process has stopped. Charging has ceased as no current flows to the battery.