Lokithor J401
A cheap, compact pack that covers most cars and gas pickups, with a boost mode and fast USB-C recharging. Worth it for anyone who wants a capable starter without paying brand-name prices.
Amazon $79.95$79.95
The Lokithor J401 is the better jump starter overall, rated 4.2 to 3.4. The Lokithor J401 leads on features. The Stanley LJ12FC costs $9.98 less ($69.97 vs $79.95).
Stanley LJ12FC
#15 in Trucks and V8sFull review
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.
Amazon $69.97$69.97
Prices were last checked October 30, 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 Lokithor J401 for features (manual override, rated to -4 °F, USB-C charging, IP65 vs rated to -4 °F, USB-C charging; no override for a flat battery).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every trucks and v8s jump starter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Lokithor J401 | Stanley LJ12FC |
|---|---|---|
| Overall rating | 4.2/5 | 3.4/5 |
| Value 40% | 90 $79.95 for its size | 95 $69.97 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 27 rated to -4 °F, USB-C charging; no override for a flat battery |
| Capacity 15% | 73 74 Wh battery | 50 capacity not published in Wh (neutral score used) |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Lokithor J401 | Stanley LJ12FC | |
|---|---|---|
| Starting | ||
| Rated engines | 8.5 L gas, 6.5 L diesel | Most cars and trucks up to V8 (no liter rating) |
| Peak amps (maker) | 2,500 A | 1,200 A |
| Cranking amps | 1,500 A | - |
| Voltage | 12 V | 12 V |
| Manual override | Yes | No |
| Lowest operating temperature | -4 °F | -4 °F |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity | 74 Wh | - |
| USB-C input | 60 W | 10 W |
| Recharge time | 0.8 hours | 6 hours |
| USB outputs | USB-C 60 W, USB-A 18 W | USB-C 15 W, USB-A 15 W |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | - |
| Dimensions | 9.45 x 4.19 x 2.36 in | 6.1 x 2.7 x 1.6 in |
| Weight | - | 1 lb |
| Warranty | 1 year | 1 year |
| Released | 2022-07 | 2025-09 |