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Home > Progressive Dynamics Converters > Inteli-Power Lithium Converters

PD9125-24L 25 Amp, 24 volt, Lithium Converter/Charger

Part NumberPD9125-24L
PD9125-24L 25 Amp, 24 volt, Lithium Converter/Charger
PD9125-24L 25 Amp, 24 volt, Lithium Converter/Charger
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Inteli-Power® PD9100L Series 12 & 24-Volt Lithium Converter/Chargers.  (Constant current, constant voltage)

Lithium 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.

 Brochure     Manual

Lithium Batteries require special balancing circuits and chargers! 12-volt lithium 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 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 battery with a standard lead/acid charger will result in a partially charged battery and may REDUCE BATTERY Life!


  • 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.
  • The PD9100L Series can be wired in parallel to charge at much higher current rates. They can also be wired in series/parallel to charge 36, 48, 60, 72 and higher voltage battery packs at high charge rates.
  • 2 year limited warranty.
  • US Patents: 5,687,066 and 5,600,550 and 7,782,002
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