Victron SmartSolar MPPT 150/70 MC4 VE.Can Charge Controller
Meets estimateListed controller current rating (70 A) meets or exceeds the 42 A estimate.
View product specifications →Charge Controller Size Calculator
Charge controllers must handle the current your array can deliver at the system voltage you are charging. This calculator uses array wattage divided by system voltage with a safety multiplier — a simplified planning method, not a substitute for manufacturer MPPT/PWM sizing charts.
Your inputs
Calculation breakdown
Estimated charge controller current
42 A
- Solar array nameplate power
- 400 W
- System voltage
- 12 V
- Safety factor
- 1.25×
- Estimated controller current
- 42 A
Common planning multiplier for controller oversizing.
⌈(400 W ÷ 12 V) × 1.25⌉
Catalog products near this estimate
Controller recommendations use published amp ratings from active catalog products. Verify MPPT voltage limits and lithium charging profiles on merchant listings before purchase.
Rover 60 Amp MPPT Solar Charge Controller
Meets estimateListed controller current rating (60 A) meets or exceeds the 42 A estimate.
View product specifications →Victron SmartSolar MPPT 100/50 Charge Controller
Meets estimateListed controller current rating (50 A) meets or exceeds the 42 A estimate.
View product specifications →Victron SmartSolar MPPT 150/45 Charge Controller
Meets estimateListed controller current rating (45 A) meets or exceeds the 42 A estimate.
View product specifications →EPEVER Tracer4210AN G3 40A MPPT Charge Controller (MT52 Kit)
Close matchListed controller current rating (40 A) is close to but below the 42 A estimate — verify margins for your load profile.
View product specifications →Renogy Rover 40A MPPT Solar Charge Controller with Bluetooth
Close matchListed controller current rating (40 A) is close to but below the 42 A estimate — verify margins for your load profile.
View product specifications →