Update: This popular front-page deal is back, now a bit cheaper with a new promo code.

AstroAI Direct via Amazon has for Prime Members: AstroAI S8 10,000mAH 1500A Car Battery Jump Starter for $42.49 - $16.57 (39%) when you redeem offer on product page or apply promo code MZITGL9U at checkout = $25.92 --> Now $25.19. Shipping is free.

Thanks to Deal Editor iconian for finding this deal.

Note: If the product link takes you to a $59.99 option, click "Other sellers on Amazon" on product page and select the Prime-exclusive $42.49 option.

Features:

• The car jumper starter portable pack has a 45C high-rate lithium battery and 37WH capacity that can start 6.0 L gas/3.0 L diesel engines and other 12 V vehicles like motorcycles, cars, SUVs, pickups, or lawnmowers.
• This jump starter's powerful 1500A peak suit current quickly starts low-voltage and fully-drained batteries