XS Power has two lines of lithium batteries.  What’s the difference?  Which one should I buy?

XS Power introduced the L series of lithium batteries in May 2010.  Featuring a patented MOSFET protection system, the L series offered the racing world a fully solid state way of controlling the battery based on several factors.  Because of this system, fully automatic and solid state low voltage protection was finally available as well as over current protection, short circuit protection, over temperature, and high voltage protection in a starting battery.  All of these are automatically resetting when the abnormal condition is corrected.

What does this mean for the race team?  In total loss systems, it means a lot.  The low voltage protection is very important for long battery life.  Lithium batteries are sensitive to being discharged below 80%.  In a 16V battery (5 cells) this is 12.0V.  If there is no system in place to stop the discharge, in theory the battery could drop all the way to 0.0V and this would be very damaging, esp. during recharging.  For this reason, we recommend the L series for applications which are total loss although the L series is also fully alternator compatible.

However, many applications and environments are not total loss.  Alternators are common in racing and once the vehicle is started the battery has done its main job.  It is now there to dampen AC ripple and other electrical noise in the system and to standby for the next starting event.  In these applications the probability of over voltage, short circuits, over current, or low voltage damage is small.  For these applications we have the C series.

The C series is a group of batteries that are lithium ion at their simplest implementation.  They feature individual cell balancing but they do not have the MOSFET protection system included.  Instead all the protection systems are built in at the cell level.  Unfortunately these are non-resetting.   Although they are not fused, you can think of their operation as fuse like.  Once an offending condition happens, the protection system engages and the battery is safely limited from damaging itself further or surrounding components.

In most cases where an alternator is present in the vehicle, operating the battery outside of its comfortable range is improbable.  Therefore when running a properly sized alternator, the C series is what we recommend.  If the battery is in a total loss environment or in an environment where it will not be monitored closely, we recommend the L series.

Considering the cell level protection system in the C series is non-resettable more responsibility is placed on the consumer to monitor its operation.  Therefore the warranty is limited to two years workmanship only.  In contrast the L series features a two years parts and workmanship warranty.  Both are fully alternator compatible.

Try an XS Power lithium battery today risk free!  You will be amazed at how light they are and how well they start what you drive!

XS Power introduces the C545 Lithium Powerpack, an ultra lightweight racing battery for 12V applications. It is one of the C series of Lithium Powerpacks from XS Power that feature world class lithium performance at an affordable price.
The C545 Lithium Powerpack is XS Power’s lightest 12V battery to date and is a perfect fit for street use, road racing, motorcycle, and ATV racing applications. It can deliver high currents in short bursts and is designed for starting engines up to 3.0L and yet it only weighs only 3.63 lbs. This 12V Lithium-Ion battery is fully alternator compatible, has a PHCA of 385, 16 minutes of reserve at 25A, and a total capacity of 7 Ah. It can deliver up to 560A max and 100A continuously which is more than enough to start engines and supplement the alternator’s output. The battery is 177mm L x 86mm W x 131mmm H and a full line of battery holders are available at www.4xspower.com. This battery features fast cell balancing for safety, long life, and maximum capacity. In the event of an alternator failure, the C545 can be quickly recharged with an XS Power 12V lithium charger or any 12V AGM compatible battery charger (3A maximum). MSRP is $789.
XS Power is a manufacturer and distributor in Knoxville, TN USA of high performance batteries for racing. They offer AGM lead acid batteries featuring lead-tin technology, lithium-ion batteries designed for automotive use, as well as a complimentary line of accessories. Please visit their website at www.4xspower.com or call 1-888-4xspower for more information.

XS Power introduces the C925 Lithium Powerpack, a lightweight racing battery for circle track racing applications. It is one of the C series of Lithium Powerpacks from XS Power that feature world class lithium performance at an affordable price.
The C925 Lithium Powerpack is fully alternator compatible and weighs only 8.89 lbs. It features 23 Ah of capacity in a compact 925 size case. It is fully alternator compatible and designed for circle track racing although it is perfectly at home on the street in exotic cars. This 12V Lithium-Ion battery has 53 minutes of reserve at 25A and a PHCA of 925. It can deliver 1,200A max and 250A continuously. This is more than enough to start V8, V10, and V12 engines and supplement the alternator’s output. The battery is 165mm L x 176mm W x 125mm H and a full line of battery holders are available at www.4xspower.com. This battery features fast cell balancing for safety, long life, and maximum capacity. In the event of an alternator failure, the C925 can be quickly recharged with an XS Power 12V lithium charger or any 12V AGM compatible battery charger (6A maximum). MSRP is $1,414.
XS Power is a manufacturer and distributor in Knoxville, TN USA of high performance batteries for racing. They offer AGM lead acid batteries featuring lead-tin technology, lithium-ion batteries designed for automotive use, as well as a complimentary line of accessories. Please visit their website at www.4xspower.com or call 1-888-4XSPOWER for more information.

XS Power introduces the C680 Lithium Powerpack, a lightweight racing battery for 12V automotive road racing and circle track applications. It is one of the C series of Lithium Powerpacks from XS Power that feature world class lithium performance at an affordable price.
The C680 Lithium Powerpack is fully alternator compatible and weighs only 5.5 lbs. The performance vs. cost of this battery makes it a great value in a lightweight racing battery for street use, road course, asphalt circle track, and dirt track with alternators. This 12V Lithium-Ion battery has 26 minutes of reserve and a total capacity of 11Ah. It can deliver 800A max, has a PHCA of 680, and 125A continuously which is more than enough to start engines up to 5.0L and supplement the alternator’s output. The battery is 185mm L x 81mm W x 169mm H and a full line of battery holders are available at www.4xspower.com. This battery features fast cell balancing for safety, long life, and maximum capacity. In the event of an alternator failure, the C680 can be quickly recharged with an XS Power 12V lithium charger or any 12V AGM compatible battery charger (3A maximum). MSRP is $846.
XS Power is a manufacturer and distributor in Knoxville, TN USA of high performance batteries for racing. They offer AGM lead acid batteries featuring lead-tin technology, lithium-ion batteries designed for automotive use, as well as a complimentary line of accessories. Please visit their website at www.4xspower.com or call 1-888-4xspower for more information.

XS Power introduces the C375 Lithium Powerpack, a lightweight racing battery for 12V automotive road racing and circle track applications. It is one of the C series of Lithium Powerpacks from XS Power that feature world class lithium performance at an affordable price.

The C375 Lithium Powerpack is fully alternator compatible and weighs only 3.81 lbs. The performance vs. cost of this battery makes it a great value in a lightweight racing battery for street use, road course, asphalt circle track, and dirt track with alternators. This 12V Lithium-Ion battery has 18 minutes of reserve at 25A and a total capacity of 8Ah. It can deliver 700A max, has a PHCA of 440, and 100A continuously which is more than enough to start engines up to 3.8L and supplement the alternator’s output. The battery is 200mm L x 78mm W x 134mm H and a full line of battery holders are available at www.4xspower.com. Mount it on its side for a truly low profile battery solution. This battery features fast cell balancing for safety, long life, and maximum capacity. In the event of an alternator failure, the C375 can be quickly recharged with an XS Power 12V lithium charger or any 12V AGM compatible battery charger (3A maximum). MSRP is $789.

XS Power is a manufacturer and distributor in Knoxville, TN USA of high performance batteries for racing. They offer AGM lead acid batteries featuring lead-tin technology, lithium-ion batteries designed for automotive use, as well as a complimentary line of accessories. Please visit their website at www.4xspower.com or call 1-888-4xspower for more information.