Spartan charger, model NCH0001 was designed for 16.8V military Li-ION battery. The charger is a High Efficiency device generating constant-current /constant-voltage for charging a Li-ION battery pack. Charge current is programmable by external resistors and can be monitored as an output voltage. The charger output voltage and current can be programmed to support from one to four 4.2V cells of Li-ION battery packs (4.2V to 16.8V). Additional protection of "Charge-Time Limit" and compartment temperature are provided as well. Under normal condition, when output voltage reaches a pre-set value or if charge current is less than "Top-off" current of 100mA, charging is terminated and a "house-keeper" timer is initiated to continually monitoring the battery voltage. A special protection is also provided to prevent battery self-discharge in case power is not applied to the charger.

• 18V-28V DC Input
• 16.8V Charge Termination Voltage
  
• 3.1A maximum Charge Current
• Charge Indication with Green LED
• Error Indication with Red LED
• Aluminum Housing
• 2.5MM Power Input Connector
• Small Size
• Light Weight
• High Performance
• High Reliability

Spartan Charger (PDF)