What Size AH Battery Bank Should Be Used With 1200 Watt Solar Kit?
Updated 08/07/2025 | Published 07/15/2025
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Question:
How big should my battery bank be to pair with the RS67VR? MPPT controller is capable of handling high input and makes expansion easy later.
asked by: Heather K
Expert Reply:
At 1,200 watts, the Rich Solar 6 panel kit # RS67VR can generate about 90–100 amps of usable charge in a single sunny day. To take advantage of that, we’d recommend a minimum of 300–400Ah of lithium or 500–600Ah of AGM, but ideally you’d have 600–800Ah to really store and use the full output.
The nice thing is, the included MPPT controller is capable of handling high input and makes expansion easy later. This is much more efficient and user friendly than the older style of PWM (pulse width modulation) controllers.
What batteries did you have in mind?
You could use two of the Rich Solar Alpha 2 Pro Lithium Battery 200AH # RS84VR wired in parallel (12v, 400ah) for a nice setup.
Product Page this Question was Asked From
Rich Solar RV Solar Charging Kit w/ 6 Panels - 12V - 1,200 Watts
- RV Solar Panels
- Roof Mounted Solar Kit
- Rigid Panels
- 801 - 1200 Watts
- 10.1 Amps or More
- AGM
- Gel
- Lead Acid
- Lithium
- Expandable
- MPPT
- 6 Panels
- Rich Solar
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Andrew N.
8/7/2025
Hey, how did the setup with the Rich Solar kit work out for you? Did you decide on the lithium batteries or go with another option? I'm curious because your experience could really help others looking to optimize their solar setups!