Power Queen 12V 125Ah Group 27 Lithium Battery Review: A Smart Upgrade for RVs and Trolling Motors
ReviewsThursday, 30 October 2025 at 02:16
If you’ve
ever struggled with heavy, slow-charging lead-acid batteries, this one’s worth
a look. The Group 27 lithium battery from Power Queen takes what most RV
and marine owners already know and love about the Group 27 size.
Power Queen now delivers
a serious upgrade. Its 125Ah Group 27 battery is compact, efficient, and built for people who want
dependable power that just works.
More Power in the Same Group 27 Size
The jump
from a 12V 100Ah to a 12V 125Ah setup doesn’t sound huge on paper, but that 20%
boost in capacity makes a noticeable difference. You’re getting about 1,600Wh
of usable energy, which translates to longer hours running lights, fridges, or
trolling motors before needing a recharge.
What’s
great is that this battery keeps the standard Group 27 footprint — it slides
right into most factory battery trays. At just 25 pounds, it’s much lighter
than the typical 50–60 lb lead-acid battery. You can easily lift it with one
hand, and that alone is a huge win for anyone tired of lugging heavy gear.
Specs Sheet: Power Queen 12V 125Ah Group 27 Smart LiFePO4 Battery
| Specification | Details |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 12.8V |
| Capacity | 125Ah (≈1,600Wh) |
| Cycle Life | 4000+ cycles at 100% DOD / up to 10 years lifespan |
| BMS Rating | 100A Smart BMS |
| Bluetooth | Yes, Bluetooth 5.0 App Monitoring |
| Low-Temp Protection | Automatic charge/discharge protection below 0°C |
| Waterproof Rating | IP65 (Dust & Water Resistant) |
| Weight | 25.12 lbs |
| Size | Group 27 Standard (12.13 × 6.69 × 8.31 in) |
| Expansion | Up to 4 in Series or 4 in Parallel |
| Applications | RVs, Marine, Trolling Motors, Home Energy Storage |
| Warranty | 5 Years |
Smarter Features for Modern Use
What really
sets this battery apart is the Bluetooth Smart Edition. With the Power
Queen app, you can check real-time voltage, capacity, cycle count, and
temperature straight from your phone. It’s super convenient — no need to guess
how much charge you’ve got left or worry about overusing it.
Another
smart touch is the low-temperature protection system. When the
temperature drops below freezing, the battery automatically prevents charging
to avoid damage. It starts charging again safely once things warm up to around
5°C (41°F). This is a big plus for people who camp or fish in cold conditions.
The IP65
waterproof and dustproof rating also makes it tough enough for harsh
environments.
A Real Lead-Acid Replacement
The Power
Queen 12V 125Ah lithium battery is built as a direct replacement for a 12V
AGM battery — but with all the modern advantages. You get:
- 60% less weight
- Up to 10x faster charging
- 8x longer cycle life
- 3x longer overall lifespan
- Zero maintenance required
It’s also
cleaner and safer. No acid, no fumes, no corrosion — just pure, efficient
energy. Compared to a 12V 200Ah AGM battery, it’s far more
space-efficient and delivers energy with minimal loss, making it ideal for
solar setups or off-grid RV power systems.
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Verdict
After
testing it in both an RV and on a 55 lb thrust trolling motor, the Power Queen 12V
125Ah deep cycle battery easily outperformed any standard lead-acid battery
I’ve used before. The Bluetooth feature is genuinely useful, the build feels
solid, and the lightweight design makes installation simple.
Why Choose It?
- Lightweight and Compact: Weighs only 25 lbs, about half the weight of a traditional lead-acid battery, yet fits perfectly in standard Group 27 trays.
- More Power, Same Size: Offers 125Ah (≈1,600Wh) of energy — around 20% more capacity than most 100Ah batteries.
- Smart Bluetooth Monitoring: Lets you check voltage, charge level, temperature, and cycle count in real time through the Power Queen app.
- Cold-Weather Ready: Built-in low-temperature protection automatically prevents charging below 0°C to avoid damage.
- Long Lifespan: Delivers 4000+ charge cycles and up to 10 years of reliable use with zero maintenance.
- Tough and Weatherproof: IP65 rating keeps it protected from dust, splashes, and harsh outdoor conditions.
- Cleaner Energy Solution: No acid, fumes, or corrosion — just safe and efficient LiFePO4 power for RVs, boats, and solar setups.
If you’re
looking for a durable, high-capacity Group 27 deep cycle battery that’s easy to monitor and built to
last, this one hits all the right marks. It’s efficient, reliable, and smart —
exactly what a modern RV or marine setup needs.
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