Timeusb 12V 140Ah Smart vs Vatrer 12V 100Ah Self-Heating

The Vatrer 12V 100Ah Self-Heating is the better 12V lithium battery overall, rated 4.1 to 4.0. The Vatrer 12V 100Ah Self-Heating leads on cold weather. The Timeusb 12V 140Ah Smart wins on output and value. The Vatrer 12V 100Ah Self-Heating costs $20 less ($279.99 vs $299.99).

Higher rated

Vatrer 12V 100Ah Self-Heating

#1 in 100 Ah class4.1Full review

A tested, self-heating 100Ah battery with app monitoring, for RVs and solar setups that see winter charging. Priced well below most heated batteries.

Amazon $279.99

$279.99

Timeusb 12V 140Ah Smart

#3 in 100 Ah class4.0Full review

For boaters and RV owners who want more runtime than a 100Ah battery without changing their Group 31 battery tray.

Amazon $299.99

$299.99

Prices were last checked October 31, 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 Vatrer 12V 100Ah Self-Heating for cold weather (self-heating, so it charges below freezing vs stops charging below freezing (no heater)).
Choose the Timeusb 12V 140Ah Smart for output (150 A continuous (about 1,920 W at 12.8 V) vs 100 A continuous (about 1,280 W at 12.8 V)) and value ($0.17 per rated Wh vs $0.22 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	Vatrer 12V 100Ah Self-Heating	Timeusb 12V 140Ah Smart
Overall rating	4.1/5	4.0/5
Value 35%	80 $0.22 per rated Wh	89 $0.17 per rated Wh
Tested capacity 15%	100 104% 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)	100 150 A continuous (about 1,920 W at 12.8 V)
Warranty 15%	50 5-year warranty	50 5-year warranty
Cycle life 10%	67 5,000 cycles at 80% depth, maker rating	50 4,000 cycles at 100% depth, maker rating
Cold weather 10%	100 self-heating, so it charges below freezing	60 stops charging below freezing (no heater)

Independent capacity tests

Vatrer 12V 100Ah Self-Heating

Tested by	Measured	Energy	Of rated	Discharge	Conditions
Techtest	104.2 Ah	1,350 Wh	104%	20 A	Mean of 4 discharges to 10.8 V on a DLB-600W electronic load (1 at 10 A, 3 at 20 A); range 103.64-105.19 Ah. EU-market unit, same 329 x 172 x 214 mm case.