We are the cheapest supplier of Motorsport UK Registered LiFePO4 batteries in the UK. Our batteries utilise the latest control module technology and are the latest lightweight version of these batteries, not old stock sold by our competitors.
Slightly larger physically but packing 66% more power than the PS-12. Extremely compact the Battery Only Requires only 60% of the Space of a standard Caterham 53034 Banner battery and is only 30% of the weight!
Recommended for cars with larger capacity engines 2.5 litres or over or cars with more demanding electrical systems.
Lotus Elise's or bike engined cars with electric reverse gear should use this PS-20 battery.
Extremely Powerful - 630A cold cranking
Rapid Recharge: Recharges far faster than a conventional battery. Retains charge when isolated for up to 2 years.
Safe: Unlike other lithium batteries JWM batteries are internally inert, do no run warm and do not leak as they contain no liquids. You can even install them upside down!
JWM batteries are equipped with electronic systems to protect against overcharging, over discharging and short circuit.
Voltage - 12.8v
Capacity - 20Ah (60Ah PbEq)
Cold Cranking Amps - 630
Size (mm) (W x D x H laying on side) - 177 x 152 x 87
Weight 2.1 kg including optional cage.
Extremely compact the Battery Only Requires less than 1/3 Of The Space Of A Conventional Battery
Please Note: Before fitting a LifeP04 battery of any brand you should ensure your charging system is in good order. Poor grounds in charging and internal alternator voltage regulator circuits can damage LifeP04 batteries. Also ensure your battery is positioned sufficiently far away from very hot engine components such as exhaust manifolds.
Be aware the digital display should be switched off when not in use to prevent battery discharge
I've been around Caterhams as long as I can remember. With my father we've been on a journey to build cars that exceed the specification of any factory produced Caterham. This interest has become my career and having completed my time at Oxford Brookes University having achieved two degrees: Motorsport Engineering (1:1 GPA 4.0), Motorsport Technology (1:1 GPA 4.0 Hons). I am now sharing my time between running JWM and working as a professional race engineer in high level motorsport. My talents were also recognised by the University where I led their Formula Student team in the area of Vehicle Dynamics.
Got suspension questions? Advice is free!
My area of specialisation is suspension analysis, research and design, where I have worked with one of the most successful Caterham race teams, DPR Motorsport, as well as designing and refining my own products. I've recently built my own Caterham Sigma car which is equipped with full data logging in order to model the best settings for your car and be able to blueprint suspension settings on race cars. I am opening a workshop near Cadwell Park and Blyton Park in the autumn where I will offer these setups and services in a fully equipped workshop.
For products in my shop, I endeavour to keep all items in stock and offer next day delivery on my items in partnership with DPD.
As JWM is a small company, and at this time we do not charge VAT.
Please note if you are outside the UK and EU you can still buy some products from me, but the diversity in size and weight of some parts means I ask that you email me so I can calculate the best insured shipping rates.