NOCO GENIUS1 vs Battery Tender Junior Multi-Chemistry

Both are 1 amp maintainers with a lithium mode. The GENIUS1 also charges 6 V batteries and NOCO publishes a 30 Ah recharge rating; Battery Tender lists the Junior Multi-Chemistry at 12 V only and does not publish an Ah range on its product page.

Checked against sources on by the TrueAmps editorial team.

NOCO GENIUS1 smart battery charger with clampsNOCO GENIUS1Battery Tender Junior Multi-Chemistry smart battery charger with clampsBattery Tender Junior Multi-Chemistry
Manufacturer ratings from each maker's spec page and listings from the Intertek directory. Bold marks the higher rating (lower for weight).
SpecGENIUS1Junior Multi-Chemistry
Charge current1 A1 A
Recharges up to30 Ahnot published
Battery voltages6 / 12 V12 V
Lithium modeYesYes
Weight0.77 lb0.65 lb
Safety listingUL 1236UL 1236

Choose the GENIUS1 if

You have a 6 V battery, or want a published recharge rating.

See NOCO GENIUS1 on Amazon

Choose the Junior Multi-Chemistry if

You want the Battery Tender float maintenance approach on a 12 V lead-acid or lithium battery.

See Battery Tender Junior Multi-Chemistry on Amazon

Questions people ask

NOCO or Battery Tender for winter storage?

Both are 1 A units their makers describe for maintaining a stored battery. The GENIUS1 adds 6 V support; the Junior Multi-Chemistry is 12 V only.

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