ECO-WORTHY 12V 100Ah Bluetooth vs LiTime 12V 100Ah Group 31

The LiTime 12V 100Ah Group 31 is the better 12V lithium battery overall, rated 3.8 to 3.6. The LiTime 12V 100Ah Group 31 leads on warranty. The ECO-WORTHY 12V 100Ah Bluetooth wins on value. The ECO-WORTHY 12V 100Ah Bluetooth costs $126 less ($209.99 vs $335.99).

Higher rated

LiTime 12V 100Ah Group 31

#3 in 100 Ah class3.8Full 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

ECO-WORTHY 12V 100Ah Bluetooth

#10 in 100 Ah class3.6Full review

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.

Amazon $209.99

$209.99

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.

Which should you buy?

Choose the LiTime 12V 100Ah Group 31 for warranty (5-year warranty vs 3-year warranty).
Choose the ECO-WORTHY 12V 100Ah Bluetooth for value ($0.16 per rated Wh vs $0.26 per rated Wh).

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	ECO-WORTHY 12V 100Ah Bluetooth
Overall rating	3.8/5	3.6/5
Value 35%	73 $0.26 per rated Wh	89 $0.16 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	25 3-year warranty
Cycle life 10%	50 4,000 cycles at 100% depth, maker rating	50 cycle life not published (neutral score used)
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.