The MXS 5.0 is the charger most enthusiasts end up with after their first dead battery in the spring. It runs CTEK's eight-step program to recover, test and maintain a 12V lead-acid battery, and it can stay hooked up all season without overcharging.

CTEK MXS 5.0 Battery Maintainer and Charger, 12V 4.3 Amp, Part 40-206

A battery that sits partly discharged builds up sulfate on its plates, and every week it sits that way it loses a little capacity it never gets back. The MXS 5.0 keeps that from starting. It brings the battery to full, confirms it is holding voltage, and then gives it short maintenance pulses only when the voltage sags.

Separate settings handle AGM batteries, small motorcycle batteries and cold garages, and a reconditioning step can help a battery that was drained too far. The housing is sealed, the clamps are spark-free and a backwards hookup does no harm.

Frequently asked questions

Is the MXS 5.0 a trickle charger?
No. A trickle charger feeds current constantly. The MXS 5.0 measures the battery and only charges when it needs it, which is far better for long storage.

Will it charge a lithium battery?
No. For lithium, choose the CTEK NXT 5.

Fitment: All 12V vehicles with flooded, AGM, EFB or gel lead-acid batteries