Redodo 12V 100Ah Ultra-Mini Bluetooth
#8 in 100 Ah classFull review
A strong pick for compact 100Ah builds in vans and small boats. It matches the LiTime Xtra-Mini’s size and features for less money.
Amazon $279.99$279.99
3.6/5
A low-cost Group 24 lithium battery with a phone app for boats, RVs and small solar setups. Buyers who need 36V or 48V banks, or cold-weather charging, should look elsewhere.
- 100 Ah (1,280 Wh)Capacity
- 100 AContinuous output
- Charge cutoff onlyCold charging
- YesBluetooth
- 3 yearsWarranty
- $0.16Price / Wh
Check price at Amazon$209.99
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Phone app shows charge level, current and voltage, so you know how much is left without a separate monitor
- Group 24 footprint drops into most trolling-motor and RV battery trays
- Stops charging in freezing weather instead of damaging the cells
- One of the cheapest Bluetooth 100Ah batteries from an established brand
Cons
- Only 2 in series, so it can build a 24V bank but not 36V or 48V
- No published peak current or cycle rating in the US listing
- No self-heating: it won’t charge below about 19 °F until it warms up
- 3-year warranty is short next to the 5 to 10 years common at this size
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | 12.8V 100AH (Group 24, Bluetooth) |
|---|---|
| Capacity | |
| Rated capacity | 100 Ah (1,280 Wh) |
| Nominal voltage | 12.8 V |
| Chemistry | LiFePO4 |
| Price per Wh | $0.16 |
| BMS | |
| Continuous discharge | 100 A |
| Low-temperature charging | Charge cutoff only |
| Bluetooth monitoring | Yes |
| Series / parallel | up to 2 in series, 4 in parallel |
| Build | |
| Case size | Group 24 |
| Dimensions | 10.23 x 6.6 x 8.43 in |
| Weight | 23.1 lb |
| Terminals | M8 |
| Warranty | 3 years |
Alternatives in this size
Power Queen 12V 100Ah Group 31
#9 in 100 Ah classFull review
A budget Group 31 replacement for lead-acid in boats and RVs that stay above freezing.
Amazon $265.99$265.99
LiTime 12V 100Ah Self-Heating Bluetooth
#11 in 100 Ah classFull review
For RVers and boaters who charge in sub-freezing weather. The built-in heater and Bluetooth monitoring justify the premium over the standard model.
Amazon $409.99$409.99
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