NOCO GENIUS1 vs GENIUS2
The GENIUS2 charges at twice the current (2 A against 1 A), so it takes half the time on the same battery, and NOCO rates it for batteries up to 40 Ah against 30 Ah. Both handle 6 V and 12 V lead-acid and lithium and both maintain batteries of any size.
Checked against sources on by the TrueAmps editorial team.
| Spec | GENIUS1 | GENIUS2 |
|---|---|---|
| Charge current | 1 A | 2 A |
| Recharges up to | 30 Ah | 40 Ah |
| Battery voltages | 6 / 12 V | 6 / 12 V |
| Lithium mode | Yes | Yes |
| Weight | 0.77 lb | 1.1 lb |
| Safety listing | UL 1236 | UL 1236 |
Choose the GENIUS1 if
You mainly want to keep a stored bike, mower or car topped up and speed does not matter.
See NOCO GENIUS1 on Amazon (paid link)
Choose the GENIUS2 if
You also recharge small batteries from low and want it done in half the time.
See NOCO GENIUS2 on Amazon (paid link)
Questions people ask
What is the difference between NOCO GENIUS1 and GENIUS2?
Charge current and rated capacity: 1 A and up to 30 Ah for the GENIUS1, 2 A and up to 40 Ah for the GENIUS2. NOCO lists IP60 for the GENIUS1 and IP65 for the GENIUS2, and the GENIUS2 ships with a mounting bracket.
Is the GENIUS2 twice as fast as the GENIUS1?
At twice the current, yes. By NOCO's charge-time ratio a 30 Ah battery from half charge takes about 22.5 hours on the GENIUS1 and about 11 hours on the GENIUS2.