12V 50A DC-DC On-Board Battery Charger with MPPT
Sold by Renogy UK
From £199.99across the range: £199.99 – £279.99
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.
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Overview
12V 50A DC-DC On-Board Battery Charger with MPPT
50A of alternator charging plus an MPPT solar controller, 660W total. The version of the dual-input charger to buy if your bank is 200Ah or larger, or if you want a day's driving to genuinely refill it rather than top it up.
- 50A maximum output, 660W
- Dual input, alternator and built-in MPPT solar
- Euro 6 smart alternators, 12–16V input; traditional 13.2–16V
- 94% charging efficiency
- RS485, Bluetooth module available
- 1.86kg, 244 × 146 × 96mm, −35°C to 65°C
50A changes the arithmetic
At 50A you are putting roughly 600Wh into the bank per hour of driving. For a full-time build with a 300Ah pack that is the difference between arriving somewhere with a half-charged battery and arriving full. It is also the point where the alternator becomes a serious winter charging source rather than a supplement to solar.
Mind the alternator and the cable
50A at the output is a real load on the vehicle side, so confirm your alternator has the headroom, particularly on smaller vans. Fusing is specified at 75–100A on both input and output, and terminals take 8AWG to 4AWG — use the heavier end for a long run from the cab to a rear locker.
Before you order
Same footprint as the 30A but 96mm deep rather than 77mm, so check clearance if you are mounting it in a shallow space. It wants air around it: at 50A this unit makes real heat, and a sealed cupboard will make it derate.
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.
Build notes for this part
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Useful product advice, installation considerations and occasional offers for this part of your van build.