Battery Tender Power Tender 3 A
#8 in Up to 5 AFull review
A versatile maintainer for garages with a mix of 6 V classics, 12 V cars and lithium powersport batteries.
Amazon $69.95$69.95
3.1/5
A budget 12 V maintainer for owners with a mix of lead acid and lithium batteries. It suits storage duty more than fast recharging.
- 3 ACharge current
- 12 VVoltage
- YesLithium mode
- 1 yearWarranty
Check price at Amazon$44.32
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Handles LiFePO4 as well as lead acid batteries
- Folding hook lets you hang it out of the way while it charges
- Clamps and ring leads included for leaving it wired to a stored vehicle
Cons
- 12 V only, so it will not charge 6 V classic car or tractor batteries
- Only a 1 year warranty
- At 3 A a flat car battery still takes most of a day
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its current. How we rank explains each one.
Specifications
| Model number | SP1297 |
|---|---|
| Charging | |
| Charge current | 3 A |
| Voltage | 12 V |
| Lithium mode | Yes |
| AGM mode | No |
| Temperature compensation | No |
| Repair mode | Yes |
| Power supply mode | No |
| Build | |
| Weight | 1.8 lb |
| Warranty | 1 year |
| Released | 2017-08 |
Alternatives in this current
NOCO GENIUS2
#9 in Up to 5 AFull review
A weatherproof maintainer for motorcycles, ATVs and cars in storage that also handles lithium batteries. Owners of big truck or RV batteries should step up to a GENIUS5 or GENIUS10.
Amazon $49.95$49.95
NOCO GENIUS1
#11 in Up to 5 AFull review
A cheap, capable maintainer for motorcycles, mowers and stored cars. Pick a bigger charger if you need to refill flat car batteries quickly.
Amazon $29.95$29.95
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