A low cost dual input charger for a small van with a couple of 12 V panels and a lithium battery.
LiTime $209.99
For budget van and trailer builds that want alternator and solar charging in one cheap box. Specs are thin, so pick it on price rather than features.
- 40 ACharge current
- MPPTSolar input
- 93%Efficiency
- 2 yearsWarranty
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
- Alternator and solar input for well under $200
- Recharges a 100 Ah lithium battery in about 2.5 hours of driving
- Can wake a LiFePO4 battery whose BMS has shut off
- Anderson connectors make wiring quick
- No app, display or custom voltages; status is on LEDs
- Solar input limits and alternator input range aren’t published
- No temperature sensor
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its current. How we rank explains each one.
Specifications
| Model number | R12V40A-DC-Z |
|---|---|
| Charging | |
| Charge current | 40 A |
| Output battery | 12 V |
| LiFePO4 profile | Yes |
| Peak efficiency | 93% |
| Solar | |
| Solar input | MPPT |
| Build | |
| Bluetooth | No |
| Weight | 2.4 lb |
| Warranty | 2 years |
| Released | 2023-07 |
Alternatives in this current
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Also compared with: BougeRV Sunflow 40A (charge controller), EPEVER Tracer 4210AN G3 (charge controller), Renogy Rover 40A (charge controller).
Compare the Redodo 12V 40A DC-DC with MPPT with any other DC-DC charger →
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