Power Queen 12V 100Ah Group 31 Battery Review — Is It Worth It? [2026]
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Power Queen 12V 100Ah Group 31 Battery
A drop-in Group 31 replacement LiFePO4 battery with a built-in 100A BMS, 1280Wh of energy and a 5-year warranty — built for RV, marine and off-grid use.
Is the Power Queen 12V 100Ah Group 31 Battery worth buying?
Yes — if you need a drop-in Group 31 replacement lithium battery for an RV, boat or off-grid setup. It packs 1280Wh behind a built-in 100A BMS, is rated for 4,000+ cycles at 100% depth of discharge, and comes with a 5-year warranty. It's currently $261.99, down from $279.99. We did not find published customer review data on this specific listing, so weigh the manufacturer specs accordingly.
A straightforward drop-in Group 31 lithium upgrade
This is Power Queen's "Classic" (non-Bluetooth) 12V 100Ah battery, sized to match a standard Group 31 lead-acid battery box so it can be swapped in without modifying the tray. It's built around a built-in 100A battery management system, and it's compatible with a 14.6V 20A charger for roughly 5-hour fast charging.
What makes this battery stand out
Group 31 form factor
At L13″ × W6.77″ × H8.43″ and 24.25 lbs, it's sized to slot directly into a standard Group 31 battery box.
100A battery management system
The built-in 100A BMS handles standard lithium protections like overcharge and over-discharge, keeping the pack safe without external components.
4,000+ cycles at 100% DoD
Power Queen rates the cell at 4,000+ full cycles at 100% depth of discharge, or 8,000+ cycles at 80% DoD, for a stated 10-year lifespan.
5-hour charge, expandable system
Pair it with a 14.6V 20A charger for roughly 5-hour fast charging, and the platform is expandable up to a 51.2V 400Ah (20.48kWh) system.
Full spec sheet
| Chemistry | LiFePO4 (lithium iron phosphate) |
| Voltage / Capacity | 12.8V nominal / 100Ah |
| Energy | 1,280Wh |
| Dimensions | L13″ × W6.77″ × H8.43″ (Group 31) |
| Weight | 24.25 lbs |
| BMS | Built-in 100A |
| Cycle life | 4,000+ cycles @ 100% DoD / 8,000+ @ 80% DoD |
| Lifespan | 10 years (manufacturer rated) |
| Fast charge | Compatible with 14.6V 20A charger, ~5 hours |
| Expandability | Up to 51.2V 400Ah (20.48kWh) |
| Warranty | 5 years + 24-hour customer support |
| Shipping | Free delivery, 2–5 business days in the US |
| Current price | $261.99 (list $279.99) |
Pros & Cons
Pros
- Drop-in Group 31 size — no tray modification needed.
- 5-year warranty with 24-hour customer support.
- 4,000+ cycle life at 100% depth of discharge.
- Compatible with a fast 5-hour charger option.
- Expandable into a larger 51.2V 400Ah system.
Cons
- No published customer rating or review data found on this listing.
- "Classic" model — no Bluetooth app monitoring (that's on the Smart variants).
- Charger sold separately unless you choose a bundle.
- 24.25 lb weight to handle during installation.
Answers before you buy
What is a Group 31 battery, and why does that matter?
How long does it take to charge?
What is the rated cycle life?
What warranty does it come with?
Can I expand this into a bigger system?
What applications is it designed for?
A solid, well-specced budget entry into lithium
For a drop-in Group 31 lithium upgrade with a genuine 5-year warranty and a competitive cycle-life rating, the 12V 100Ah is a reasonable starting point in Power Queen's lineup — just note it lacks the Bluetooth monitoring of the brand's Smart models.
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