LiTime 12V 100Ah Group 31
#3 in 100 Ah classFull review
A good-value Group 31 drop-in for boats and RVs used in mild climates. Independent testing shows it delivers more than its rated 100Ah.
Amazon $335.99$335.99
The LiTime 12V 100Ah Group 31 is the better 12V lithium battery overall, rated 3.8 to 3.7. The Redodo 12V 100Ah Ultra-Mini Bluetooth costs $56 less ($279.99 vs $335.99).
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
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 100 Ah class 12V lithium battery; a clear win is highlighted. How we rank explains each one.
| Factor weight | LiTime 12V 100Ah Group 31 | Redodo 12V 100Ah Ultra-Mini Bluetooth |
|---|---|---|
| Overall rating | 3.8/5 | 3.7/5 |
| Value 35% | 73 $0.26 per rated Wh | 80 $0.22 per rated Wh |
| Tested capacity 15% | 100 106% of rated capacity measured (1 test) | 50 not yet independently tested (neutral score used) |
| Output 15% | 50 100 A continuous (about 1,280 W at 12.8 V) | 50 100 A continuous (about 1,280 W at 12.8 V) |
| Warranty 15% | 50 5-year warranty | 50 5-year warranty |
| Cycle life 10% | 50 4,000 cycles at 100% depth, maker rating | 50 4,000 cycles at 100% depth, maker rating |
| Cold weather 10% | 50 low-temperature charging protection not stated (neutral score used) | 60 stops charging below freezing (no heater) |
Independent capacity tests
LiTime 12V 100Ah Group 31
| Tested by | Measured | Energy | Of rated | Discharge | Conditions |
|---|---|---|---|---|---|
| techtest.org | 106.5 Ah | 1,380 Wh | 106% | 5 A | ATORCH DLB-600W electronic load to BMS cutoff; EU unit (329 x 172 x 214 mm). Same test also measured 106.06 Ah / 1363 Wh at 10 A and 105.57 Ah / 1320.8 Wh at 20 A. |
Redodo 12V 100Ah Ultra-Mini Bluetooth
No independent test published yet.
Specifications
| LiTime 12V 100Ah Group 31 | Redodo 12V 100Ah Ultra-Mini Bluetooth | |
|---|---|---|
| Capacity | ||
| Rated capacity | 100 Ah (1,280 Wh) | 100 Ah (1,280 Wh) |
| Tested capacity | 106% of rated | - |
| Nominal voltage | 12.8 V | 12.8 V |
| Chemistry | LiFePO4 | LiFePO4 |
| Rated cycle life | 4,000 at 100% depth | 4,000 at 100% depth |
| Price per Wh | $0.26 | $0.22 |
| BMS | ||
| Continuous discharge | 100 A | 100 A |
| Low-temperature charging | - | Charge cutoff only |
| Bluetooth monitoring | No | Yes |
| Series / parallel | up to 4 in series, 4 in parallel | up to 4 in series, 4 in parallel |
| Build | ||
| Case size | Group 31 | Group 22NF |
| Dimensions | 13 x 6.77 x 8.43 in | 9.02 x 5.43 x 8.19 in |
| Weight | 22.1 lb | 19.8 lb |
| Water resistance | IP65 | IP65 |
| Warranty | 5 years | 5 years |