For drivers who want an inexpensive lithium pack to keep in the car for an occasional flat battery. Buyers who need to revive a fully dead battery should pick a model with an override mode.
Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.
Every Stanley Lithium model we rank, smallest first. Ratings compare each against its own engine size.
| Model | Engines | Rating | Price |
|---|---|---|---|
| Stanley LJ12FC (this one) | No liter rating | 3.4/5 | $69.97 |
| Stanley LJ20F | No liter rating | 3.2/5 | $116.41 |
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its engine size. How we rank explains each one.
| Model number | LJ12FC |
|---|---|
| Starting | |
| Rated engines | Most cars and trucks up to V8 (no liter rating) |
| Peak amps (maker) | 1,200 A |
| Voltage | 12 V |
| Manual override | No |
| Lowest operating temperature | -4 °F |
| Battery and charging | |
| Chemistry | Lithium-ion |
| USB-C input | 10 W |
| Recharge time | 6 hours |
| USB outputs | USB-C 15 W, USB-A 15 W |
| Build | |
| Flashlight | Yes |
| Air compressor | No |
| Dimensions | 6.1 x 2.7 x 1.6 in |
| Weight | 1 lb |
| Warranty | 1 year |
| Released | 2025-09 |
For drivers who want a light pack that handles most cars and V8s for around $110, with a longer warranty than NOCO. Those who need quick recharges should look at a 60 W USB-C model.
Amazon $103.49For pickup and V8 owners, especially in cold climates, who want a lot of starting headroom at a low price. Buyers who want fast USB-C charging should look at the GBX75.
Amazon $139.99For a garage that wants a low-cost booster and tire inflator in one box. Drivers who keep a jump starter in the car will prefer a lighter lithium pack that recharges in hours.
Amazon $88.39Compare the Stanley LJ12FC with any other jump starter →
More from Stanley: every Stanley product ranked.
