Thunder Sky manufacture the most cost effective and proven large format Lithium Ion batteries in the industry. They are excellent for many applications where light weight and high energy are important.

EV Power is the Australian representative for Everspring Global Ltd (HK) for Thunder Sky Lithium Ion batteries. Everspring is the number one distributor of Thundersky batteries worldwide and as a result we can provide quality service, warranty and backup.

Since we deal exclusively with the LFP series cells which are of the Lithium Iron Phosphate chemistry we are experts in the field of battery management and charging. We strive to provide an exemplary service to our customers at a competitive price.

Features: 1C continuous current, 3C short duration current, high capacity at high current, robust, longer life cycle than lead acid, high Coulomb efficiency, excellent for traction drive applications.

please note - when sizing cells for your application work on <1C amps average current draw and 3C amps peak where C is the cell capacity in Amp hours

• LFP40AHA - suitable for scooters and motorbike applications.
• LFP60AHA - Also most suited for scooters and motorbikes.
• LFP90AHA - best used in small cars up to 900kg at 144VDC, >50km range.
• LFP160AHA - for larger cars up to 1300kg at 144VDC, >120km range
• LFP200AHA - for very large cars to 1800kg.
• LFP260AHA - new range for very large cars and trucks.
• LFP400AHA - for very large applications.

Q: How much do Lithium Ion batteries cost?

A: Lithium Ion cells are a relatively new technology, especially so in the formats of 40Ah and greater. Thunder Sky make some of the most cost effective batteries available. However the price is still 32-3 times that of quality Lead Acid. Any new technology requires time to grow the manufacturing capabilities and begin the automation that ultimately reduces the price.

However Lithium (phosphate) Ion batteries have several times the discharge cycle life of Lead Acid. They will also deliver almost their entire amp hour capacity at high rates of discharge. In EV applications Lead Acid batteries will barely deliver half of the rated amp hour capacity because of the Peukerts effect. This makes the total cost of ownership for Lithium Ion cells lower than Lead Acid.

Q: How long will they last?

A: They should last at least 1000 cycles at 80% depth of discharge (DOD). However much depends on how they are treated. A battery management system (BMS) is important. In terms of time it is unknown because this technology hasn’t been around long enough. However rapid improvements are being made constantly.

Q: Do they require maintenance?

A: No they are completely maintenance free for their entire life.

Q: Lithium Ion Batteries can explode and catch fire can’t they?

A: Under normal circumstances with a good BMS no. However if ruptured of incorrectly discharged and charged the cells can die an early death and may catch fire because of the organic electrolyte. The LFP series are much safer then Lithium-Cobalt and Lithium-Manganese batteries.

Q: Thundersky also supply 12V batteries. Do they require a BMS?

A: The LP series are actually 4 LFP cells in one package. They do not have any management. For systems of more than 12V nominal individual cell management is recommended.

Q: Can the cells be mounted in any position?

A: Its best if they are mounted upright and all together in one pack. Engineer your vehicle around the batteries, not the reverse.

Q: My batteriies have run flat and I cannot recharge them?

A: This is a very bad situation! The only chance to resurrect them is to use a very small trickle current to get each cell back up to 3.2V. Then they can be recharged normally. Most likely they will be permanently damaged and require replacment. DO NOT ALLOW LITHIUM BATTERIES TO RUN FLAT. YOU HAVE BEEN WARNED!