Passes 33 of 34 checks in Minneapolis in December, with 1 critical failure.
The kit contains 2 × Renogy RSP200DC 200W N-Type and 1 × Renogy Rover Li 40A (RNG-CTRL-RVR40). It ships without a battery, so the year below adds 2 × Battle Born Batteries BB10012 100Ah 12V LiFePO4 from the catalog; checks about that battery are listed separately and do not count against the kit.
What fails, and where
Phoenix (warm, December): 33 of 34 pass
- Damages hardware
The fuse in the kit is wrong for a lithium battery.
Show the numbers
The included ANL fuse is not suitable for a lithium bank.Sources: Battle Born Batteries BB10012 100Ah 12V LiFePO4. ABYC E-11
Denver (moderate, December) and Minneapolis (cold, December): 33 of 34 pass
- Damages hardware
The fuse in the kit is wrong for a lithium battery.
Show the numbers
The included ANL fuse is not suitable for a lithium bank.Sources: Battle Born Batteries BB10012 100Ah 12V LiFePO4. ABYC E-11
About the battery added for the simulation: The batteries stop charging in the cold and need heating.
A year with this kit in three climates
Across the nine runs the same kit goes from no blackouts (van in Phoenix) to 238 days without power (cabin in Minneapolis). The hardware is identical in every run. Only the weather and the load change, so a review from one location says little about yours.
| Use | Phoenix, AZ (warm) | Denver, CO (moderate) | Minneapolis, MN (cold) |
|---|---|---|---|
| VanWeekend van, 400 Wh a day | no blackouts | no blackouts | 51 days without powerfirst 13 Jan, longest 15 days |
| CabinYear-round cabin, 1,697 Wh a day | 23 days without powerfirst 12 Jan, longest 5 days | 93 days without powerfirst 4 Jan, longest 7 days | 238 days without powerfirst 2 Jan, longest 45 days |
| GarageGarage backup, 453 Wh a day | no blackouts | no blackouts | 34 days without powerfirst 16 Jan, longest 11 days |
What to add so it passes in the cold
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Changes: Battery → Battle Born Batteries BB10012H 100Ah 12V LiFePO4 Heated (self-heating, charges in the cold).
| Part | Why | Qty | Buy |
|---|---|---|---|
| Battle Born Batteries BB10012H 100Ah 12V LiFePO4 Heated100 Ah lifepo4, self-heatingreplaces the kit part | 200 A continuous in total. | 2 | Search |
| Cable 12 , 8.8 mpanels to controller, red + black, 4 m run | 13.7 A × 1.56 = 21.4 A; 1.7 % drop at 31 V string voltage. | 8.8 m | Search |
| Fuse 50 A + holdercontroller to battery | 1.25 × 40 A = 50 A, and no more than the wire's 60 A. Class T because lithium short-circuit current exceeds what ANL can break. | 1 | Search |
| Lugs 10 AWGstud size to match the terminals | One per cable end. | 4 | Search |
| Heat-shrink for 10 AWG lugs | One per lug. | 4 | Search |
| Battery monitor shuntrated for the largest load | Measures what goes in and out of the bank. | 1 | Search |
Kits that pass more checks
- Renogy 400W 12V Complete Solar Panel Kit with 2.4kWh AGM Batteries 34 of 34 pass, 0 critical
How this page was computed
Every compatibility rule the checker has runs against the kit in the worst solar month of each city. The year is simulated hour by hour with the listed loads; parts to add come from the auto-fix and the computed parts list.
- Kit contents from the manufacturer verified 2026-09-16
- NREL PVWatts v8 typical weather years Phoenix, Denver, Minneapolis; fetched 15 September 2026
The formulas are the same open engine the checker runs; the methodology page lists every constant.
These results are for reference. Wiring must be installed by a qualified electrician. Mobile installations follow ABYC E-11; stationary ones NEC 690/706.