A Black Friday "deal" is often a normal price next to an inflated list price. Here a 12V lithium battery only counts as on sale when its checked price is at least 15% below its own typical price over the last 90 days, from our price history. The best-rated models are listed too, since many are good value without a sale.
On sale now
No 12V lithium battery rated 3.8 or higher is 15% or more below its typical price at the last price check (October 22, 2026). Prices are rechecked through the sales; this list updates when one drops. See the recent price changes.
Best buys at their normal price
The top-rated models in each size. A sale on one of these is worth more than a big discount on a weaker model.
Best Small 12V Lithium Batteries
- LiTime 12V 50Ah#1 of 2Full review
For kayak trolling motors, fish finders and small solar kits where weight matters more than runtime.
Amazon $209.99$209.9950505 yr$0.33 - Dakota Lithium 12V 54Ah#2 of 2Full review
For kayak anglers, ice fishing and small portable setups that need a light battery with a long warranty.
TackleDirect $399 BatteryMart $410$399546011 yr$0.58
Best 100Ah 12V Lithium Batteries
- Vatrer 12V 100Ah Self-Heating#1 of 17Full 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 $279.98$279.98100100-$0.22 - Power Queen 12V 100Ah Self-Heating#2 of 17Full review
The cheapest way to get self-heating in a Group 31 battery, for cold-weather RV and marine use. Independent testing confirms its rated capacity.
Amazon $284.99$284.991001005 yr$0.22 - LiTime 12V 100Ah Group 31#3 of 17Full 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$335.991001005 yr$0.26
Best 200Ah+ 12V Lithium Batteries
- Epoch 12V 300Ah Essential#1 of 8Full review
For RVs and boats that want a large, heated, Bluetooth-monitored bank in one Group 31 case. It suits cold-weather users who would otherwise wire up three 100Ah batteries.
Epoch $1,249$1,24930020011 yr$0.33 - LiTime 12V 230Ah Plus#2 of 8Full review
For RV and off-grid owners who want one large battery instead of a pair. It also has enough BMS current for a 2,000W inverter.
Amazon $484.49$484.492302005 yr$0.16 - LiTime 12V 320Ah Mini Bluetooth#3 of 8Full review
For off-grid and RV systems that need the most storage per inch. It holds 4 kWh in a compact case with Bluetooth monitoring.
Amazon $829.99$829.993202005 yr$0.20
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.