Renogy 40A DC-DC Charger with MPPT Solar Input
$220.00
Skip to product information
Check Price on Amazon →
Renogy 40A DC-DC Charger with MPPT Solar Input
$220.00
✓ Ships via Amazon Prime — 2-day delivery
✓ Real customer reviews + current pricing
✓ Amazon's 30-day return + full warranty
Affiliate link — NomadSignal earns a small commission at no extra cost to you.
A two-in-one charger that pulls power from your alternator while you drive AND your solar panels while you're parked — the cleanest way to keep a house battery topped up in a van.
Key Specs
- 40A DC-DC charging from vehicle alternator
- Built-in MPPT solar controller (up to 25V input, priority solar)
- Multi-stage charging for AGM, gel, flooded, and LiFePO4 batteries
- Ignition-signal input to avoid draining starter battery
- Bluetooth via optional BT-2 module for the DC Home app
- Isolation between starter and house banks
- Compact aluminum case — mounts flat or vertical
Why we picked this
Combining a DC-DC and MPPT into one unit saves wall space, wire runs, and a couple hundred bucks over separate boxes. Renogy's units aren't fancy, but they're well-priced, widely supported, and just work. Ideal for a first vanlife build.
You might also like
Victron BMV-712 Battery Monitor
Verify the charger is actually delivering what it says at the battery.
Renogy 200W Foldable Solar Suitcase
Same-brand panel that plugs straight into the MPPT input.
Compact solar option when 200W is more panel than you need.