Pro 12.8V 135Ah/200Ah/500Ah Underseat Lithium Iron Phosphate Battery
Sold by Renogy UK
From £702.99across the range: £702.99 – £2,159.99
Renogy UK's price when we last checked, on 2 September 2026. They run promotions and price by variant, so confirm the current price on their page before you buy.
Buy at Renogy UK (opens Renogy UK in a new tab)Multiple variants; verify the linked variant before quoting a price
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Overview
Pro 12.8V 135Ah/200Ah/500Ah Underseat Lithium Iron Phosphate Battery
135Ah in a 190mm-tall case that charges from −20°C. The Pro underseat is built for the one space every van has and no standard battery fits — under a swivel seat base. Renogy also sell it in 200Ah and 500Ah; the figures below are for the 135Ah.
- 135Ah at 12.8V nominal
- Charges from −20°C to 55°C, self-heating
- 4,000 cycles to 80% depth of discharge
- 135A continuous charge and discharge, 350A peak for 3 seconds
- 190mm tall, 355 × 177 × 190mm, 14.5kg
- IP65, series and parallel to 4S4P
The height is the point
A Ducato or Transit swivel seat base gives you a useful volume with very little headroom, and most 100Ah cases are simply too tall to use it. At 190mm this one goes in, which frees the bench and floor space you were going to lose to a battery box. Measure your own base before ordering — seat mechanisms vary between conversions.
Winter charging
Renogy quote a −20°C charge floor, so this pack keeps accepting alternator and solar input on cold mornings when a standard LiFePO4 battery would refuse. Under a seat in the cab that matters more than you would think: the cab is the coldest part of most vans overnight.
Before you order
135A continuous discharge suits an inverter up to about 1,500W at 12V. If you are planning a 3,000W inverter, either step up a size or parallel two. Terminals are M8, torqued to 10–12 N·m.
Renogy's published figures
Taken from Renogy's own specification for this product, on the date shown by the price. Anything wired into 230V mains should be signed off by a qualified electrician.
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