Battery Tender 800 vs Noco Genius1: Which One Should You Buy?
An 800 AMP jump starter and inflator combo against a 1A smart charger and maintainer, compared for roadside emergencies and stored vehicles.
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Top picks at a glance
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- 1
NOCO GENIUS1 6/12V Smart Battery Charger9.5/10View on Amazon - 2
Battery Tender 800 AMP Jump Starter and Tire9.5/10View on Amazon
Verdict: Choose the Battery Tender 800 if you want a jump starter plus a tire inflator in its carrying case for roadside emergencies. Choose the NOCO GENIUS1 if you want a charger that stays connected, maintains the battery and recovers deeply discharged ones.
A dead battery on a car that sat all winter is a familiar garage job, and this battery tender 800 vs noco genius1 comparison looks at a jump-start combo and a maintainer charger. The approaches differ in what each does: the Battery Tender example jumps a dead battery and inflates tires, while the NOCO example charges, maintains and desulfates.
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Example chargers
NOCO GENIUS1 6/12V Smart Battery Charger
A 1A smart charger, maintainer, trickle charger and desulfator for 6-volt and 12-volt lead-acid and lithium-ion batteries, sold as a pack of 6.
Pros
- Charges 6-volt and 12-volt lead-acid and lithium-ion batteries
- Charges from as low as 1 volt, with Force Mode to zero volts
- Listing says a thermal sensor adjusts charging with ambient temperature
- Listing says pulse charging detects and reverses sulfation and acid stratification
Cons
- No jump-start function stated
- Box contents describe one charger while the listing sells a pack of 6
- No tire inflator stated
- 110-inch DC cable sets how far the charger reaches from an outlet
Battery Tender 800 AMP Jump Starter and Tire
An 800 AMP jump starter and 140 PSI tire inflator combo with an LED flashlight strobe and 2 fast USB charging ports, in a carrying case.
Pros
- 800 AMP jump starter for a dead battery
- Built-in 140 PSI cordless tire inflator
- LED flashlight with emergency strobe
- 2 fast USB charging ports plus a Type-C charging cable
Cons
- No maintainer, trickle charging or desulfation stated
- No vehicle battery types stated
- Warranty is 12 months, shorter than the NOCO example's 3-year term
- No wall plug-in stated in the box contents
Battery tender 800 vs noco genius1 side by side
| Battery Tender 800 | NOCO GENIUS1 | Takeaway | |
|---|---|---|---|
| Main job | 800 AMP jump starter plus 140 PSI tire inflator | 1A charger, maintainer, trickle charger and desulfator | Jump and inflate against charge and maintain |
| Battery types | Internal lithium battery only; vehicle types not stated | 6-volt and 12-volt lead-acid and lithium-ion | Only the NOCO listing states the vehicle battery types it serves |
| Dead-battery recovery | Jump-starts a dead battery; no recovery charging stated | Charges from 1 volt; Force Mode to zero volts | Different answers to a dead battery |
| Tire inflation | Built-in 140 PSI inflator | Not stated | Only the Battery Tender example inflates |
| In the box | Smart alligator clips, Type-C cable, carrying case | Wall plug-in, 110-inch DC cable with clamps, eyelet terminals | Both include cables and connectors |
| Pack size | 1 | Pack of 6 | Single combo against a pack of chargers |
| Warranty | 12-month warranty | 3-year warranty | The NOCO warranty term is longer |
| Size | 9.84 x 8.26 x 3.14 inches | 3.5 x 2.3 x 1.3 inches | The NOCO example is the smaller unit |
Every rating comes from the brand’s listing and is not a shop test (gathered 2 November 2026).
What each does
The Battery Tender example is built around emergencies: an 800 AMP jump starter with smart alligator clips, a built-in 140 PSI cordless tire inflator, an LED flashlight with emergency strobe and 2 fast USB charging ports. The NOCO example is built around care: a 1A charger, maintainer, trickle charger and desulfator for 6-volt and 12-volt lead-acid batteries, including AGM, Gel, SLA and VRLA types, and lithium-ion LiFePO4 batteries. For more on the two roles, see the battery charger vs battery maintainer comparison.
Jump starting against maintaining
A jump starter answers a car that will not start right now, and a tire inflator answers a flat tire on the same stop. A maintainer answers a car that sits: the NOCO listing says the smart charger monitors the battery and can stay connected indefinitely, and the listing says precision pulse charging detects and reverses sulfation and acid stratification. For a dead battery, the NOCO example charges from as low as 1 volt, and Force Mode manually charges completely dead batteries down to zero volts.
Power, size and what is in the box
The Battery Tender example measures 9.84 x 8.26 x 3.14 inches and comes in a carrying case with smart alligator clips and a Type-C charging cable. The NOCO example measures 3.5 x 2.3 x 1.3 inches and comes with a direct wall plug-in, a 110-inch DC cable with battery clamps and integrated eyelet terminals. The NOCO listing sells a pack of 6, while the box contents describe one charger, and the 5.7 pound figure does not say whether it covers one charger or the pack.
Choose the Battery Tender 800 if
- You want a jump starter and a tire inflator in its carrying case
- You want a flashlight strobe and USB charging ports for roadside use
- You keep the unit in the car with its carrying case
Choose the NOCO GENIUS1 if
- You maintain stored cars, motorcycles or boats
- You want desulfation and dead-battery recovery
- You want a pack of 6 chargers
For more choices, see the best jump starter for compact cars and the best battery charger for motorcycles.
Lead-acid batteries can release hydrogen while charging, so charge in a ventilated space away from sparks and flames, connect positive first and negative last, set the charger to the battery type (flooded, AGM, gel, lithium), and wear eye protection. Read our Safety Disclaimer.
Garage Fit Check
- Space: the NOCO example measures 3.5 x 2.3 x 1.3 inches, while the Battery Tender example measures 9.84 x 8.26 x 3.14 inches and travels in a carrying case.
- Power: the NOCO example plugs directly into a wall outlet, while the Battery Tender example lists a Type-C charging cable in the box.
- Storage: the Battery Tender example packs into its carrying case, while the NOCO example stores with battery clamps and integrated eyelet terminals.
- Before the first job, check which battery types each unit serves: the NOCO example lists 6-volt and 12-volt lead-acid and lithium-ion types, while the Battery Tender example does not state the vehicle battery types it covers.
FAQ: garage tools
Can the NOCO GENIUS1 charge a completely dead battery?
The listing says it charges batteries from as low as 1 volt, and Force Mode manually charges completely dead batteries down to zero volts.
Does the Battery Tender 800 inflate tires?
Yes, the listing includes a built-in 140 PSI cordless tire inflator.
Can the NOCO GENIUS1 stay connected long term?
Yes, the listing says the smart charger monitors the battery and can stay connected indefinitely for maintenance.
What comes in the box with each?
The Battery Tender example includes smart alligator clips, a Type-C charging cable and a carrying case. The NOCO example includes a direct wall plug-in, a 110-inch DC cable with battery clamps and integrated eyelet terminals.
Which one has the longer warranty?
The NOCO example lists a 3-year warranty, while the Battery Tender example lists a 12-month warranty.
Related: the battery charger vs battery maintainer comparison, the best jump starter for compact cars, the best battery charger for motorcycles and our diagnostics and electrical hub.
