Matchups & Reviews
How to Use a Schumacher Battery Charger
Learn how to use a Schumacher battery charger safely: connect the clamps, choose 6V or 12V, read the lights, and maintain the battery without overcharging.
Keep a parked car, bike or boat ready to start
We compare smart chargers and maintainers from NOCO, CTEK, Schumacher, Battery Tender, Optimate and Clore by amp rating, battery type and the vehicle they suit. Begin with what you drive, how long it sits or the battery under the hood.
Latest guides
Charging Know-HowHow Does a Desulfating Battery Charger Work?
A desulfating battery charger sends timed pulses of current to break down lead sulfate crystals on the plates. Here is how the process works and when it helps.
Matchups & ReviewsHow to Use a Battery Tender Junior
How to use Battery Tender Junior: connect the ring terminals or alligator clips, plug in, read the two-color LED, and let float mode maintain the battery.
- Charging Know-How
Does a Trickle Charger Charge a Battery?
Yes, a trickle charger does charge a battery, but slowly and only to a point. See how trickle, smart and float charging differ and when to use each.
- Matchups & Reviews
Are NOCO Battery Chargers Any Good?
Are NOCO battery chargers any good? Yes, for most lead-acid and lithium batteries. Here's what the GENIUS5 and GENIUS10 do well and where CTEK fits.
- Charging Know-How
Can a Trickle Charger Drain a Battery?
Can a trickle charger drain a battery? Yes, a basic one can if it's left connected or unplugged. Learn why it happens and how smart maintainers prevent it.
- Matchups & Reviews
How to Use a NOCO Genius5 Battery Charger
Learn how to use a NOCO Genius5 battery charger: connect the clamps or eyelets, pick 6V or 12V, select the battery type, and keep it maintained safely.
Charging Know-HowCan a Battery Charger Cause a Fire?
Can a battery charger cause a fire? Yes, faulty chargers and the wrong setup can. Learn the real causes and how to charge safely at home.
- Charging Know-How
Are Battery Maintainers Safe to Leave Connected?
Are battery maintainers safe to leave connected? Learn when a smart maintainer can stay attached, what to check first, and when to unplug it.