Amazon is offering a discount on the S ZEVZO ET03, a cordless 12V car jump starter, which can be bought for $25.64 with a coupon code, down from its usual price. Cordless jump starters remove the need for jumper cables or a second vehicle, allowing drivers to restart their own car unaided, which makes them a useful addition to a roadside emergency kit.

The ET03 delivers 4,000 amps of peak power, enough to start petrol engines up to 8 litres and diesel engines up to 7 litres, covering most cars and trucks. Its 20,000mAh (74Wh) battery allows for several jump starts per charge and doubles as a phone power bank via two USB ports, while the device itself weighs about 1.4 pounds, recharges via USB-C and includes a built-in flashlight with three modes.