Clip the 15% off coupon on the product page to save a total of $60 off list on this Bluetooth-enabled battery monitor, providing battery electricity usage data via your smartphone. It's at an all-time price low. Buy Now at Amazon
- Bluetooth-enabled battery monitor
- Supports 6.5V-70V, 500 amp
- Detailed smartphone insights
- Precision shunt technology
- Auxiliary connections for versatility
- Know exactly how much electricity your boat or RV uses
- Model: SHU050150050
Clip the 30% off coupon on the page to snag this 3-in-1 charging pad for a total of $58 off its list price. Buy Now at Amazon
Clip the coupon and check out with Subscribe & Save to get the best price we've seen for this combo 48-pack of batteries. Buy Now at Amazon
It's the best deal we've seen for this 40-pack. Buy Now at Amazon
Prime members get this best-ever price — you'd normally pay around $5 more. Buy Now at Amazon
- 2,000mAh
- recharge up to 400 times
- Model: HFR-AA2400
As one of its early Prime Day deals, Amazon drops the price on this 12-pack of batteries to $13.06 when you check out with subscribe and save. Buy Now at Amazon
- rechargeable up to 1,000 times
- Model: HFR-AA2000