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
3.7/5
For campers and small RV or van builds that need a compact, inexpensive 100Ah battery from a known brand. Choose a heated model if you charge below freezing.
- 100 Ah (1,280 Wh)Capacity
- 100 AContinuous output
- Charge cutoff onlyCold charging
- NoBluetooth
- 5 yearsWarranty
- $0.21Price / Wh
Check price at Amazon$269.99
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Small Group 22NF case fits where most 100Ah batteries won’t
- Among the cheapest 100Ah batteries from an established brand
- IP65 case shrugs off splashes in an engine bay or under-seat box
- Stops charging in freezing weather instead of damaging the cells
Cons
- No Bluetooth, so you need a separate shunt to see state of charge
- Won’t charge below freezing without a heated enclosure
- 5-year warranty is shorter than premium rivals
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 | RBT12100LFP-M |
|---|---|
| Capacity | |
| Rated capacity | 100 Ah (1,280 Wh) |
| Nominal voltage | 12.8 V |
| Chemistry | LiFePO4 |
| Rated cycle life | 5,000 at 80% depth |
| Price per Wh | $0.21 |
| BMS | |
| Continuous discharge | 100 A |
| Peak discharge | 300 A for 5 s |
| Max charge current | 100 A |
| Low-temperature charging | Charge cutoff only |
| Bluetooth monitoring | No |
| Series / parallel | up to 4 in series, 4 in parallel |
| Build | |
| Case size | Group 22NF |
| Dimensions | 9.02 x 5.43 x 8.39 in |
| Weight | 21.8 lb |
| Terminals | M8 |
| Water resistance | IP65 |
| Warranty | 5 years |
Alternatives in this size
Dyness 12V 100Ah Bluetooth
#4 in 100 Ah classFull review
A cheap, IP65 Bluetooth 100Ah battery for RV, solar and marine use, from one of the larger storage-battery makers. Cold-climate users need a heated model instead.
Amazon $179.98$179.98
BougeRV 12V 100Ah Group 24
#6 in 100 Ah classFull review
A plain Group 24 lithium battery for buyers already using BougeRV fridges or solar gear. Check the BMS rating against your load before buying.
BougeRV $239.99$239.99
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