Help Center

Frequently asked questions

Charging and general usage

Are these batteries safe? What about fires and explosions?

What battery is suitable for my car?

How long can my car be left sitting for?

What kind of charger should I use?

Should I use a trickle charger or battery tender/maintenance charger?

I left the battery connected and unused for a long time. Now nothing happens when I turn the key. What should I do?

Can my car be bump-started or jump-started?

Does the battery run a Battery Management System (BMS)? Does it have auto shut-off?

I am an E46 M3 owner. How does the weight loss compare to the CSL battery or the mini cooper battery often used in the M3?