Inteli-Power® PD9100L Series

Lithium ion batteries are the future – providing excellent performance in golf carts, electric vehicles, solar power storage, ups power back-up systems, forklifts and many other applications. The new 9100L Series of Inteli-Power chargers are low cost and designed to meet stringent voltages required for properly charging & maintaining lithium ion batteries.

Lithium Ion Batteries require special balancing circuits and chargers! 12-volt lithium ion batteries are composed of 4 cells, each with a voltage rating of 3.2-volts wired in series providing a total output of 12.8 volts. Lithium iron phosphate type cells, are the safest and most common type used however, they must never be charged to a voltage over 4-volts and must never be discharged below 2-volts, or they will be damaged. Note: other cell chemistries require different voltage limits.

Due to manufacturing inconsistencies each lithium ion cell is different (i.e. they will each charge and discharge at different rates). These cell differences make recharging lithium batteries fairly complex and requires that the battery manufacture must install electronic balancing circuits inside the battery to prevent overcharging a cell, or discharging too much. While these balancing circuits protect the cells, they can increase recharge times, depending on the mix of cells in each 12-volt battery pack. This increase in recharge time is especially apparent in higher voltage and or higher current battery packs. Lithium ion batteries also require battery chargers that can produce a higher voltage than provided by standard 12-volt or 24-volt lead/acid battery chargers. Trying to recharge a lithium ion battery with a standard lead/acid charger will result in a partially charged battery and may REDUCE BATTERY Life! For more information, click here for the Lithium Charger literature or contact PDI.


  • Reverse battery protection protects converters from damage resulting from improper (reverse) battery lead connection.
  • Units deliver filtered DC power to the lithium ion batteries to ensure their built-in electronic balancing circuits operate properly.
  • Electronic current limiting automatically reduces output voltage when maximum capacity is exceed. Protects your investment.
  • Low line voltage protection automatically shuts converter down if input voltage is insufficient.
  • Variable speed intelligent cooling fan automatically monitors converter temperature and activates fan at speed required.
  • High voltage protection protects converter from spikes or surge of voltage over 135V.
  • Automatic thermal protection reduces converter output to safe levels when unit temperature exceeds pre-set limits and protects converter from damage due to excessive heat.
  • Output voltage can be FACTORY ADJUSTED to meet OEM requirements for various lithium ion battery chemistries and Voltages. Standard “L” Series voltages are set for 14.6- Volts to meet requirements for lithium iron phosphate batteries. Other chemistries may require different voltages.
  • 2 year limited warranty.
  • US Patent 7,782,002


  • Stores 3-4 times the energy of a lead/acid battery in the same space, with less weight.
  • Nearly constant output voltage during discharge. Delivers full power longer to all systems improving performance.
  • Operates over a wide range of temperatures. -4F to +158F.
  • Can charge and discharge thousands of times vs. 300-400 cycles for lead/acid batteries.
  • Retains 80% of charge for 12 months, vs. lead/acid batteries, which discharge to 80% of capacity in only 30 days!


View the Lithium Battery Converter Owners Manual (PDF)