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CTEK Assist helps you with everyday questions for your 12v/24v or EV Chargers and includes product information, a product selector tool, troubleshooting, user manuals, compatible accessories and much more.
It draws on CTEK’s knowledge and documentation to point you in the right direction—fast.
CTEK Assist for RB 4000
Can I jumpstart my 12V lithium battery?
No. The RB3000 & RB4000 should not be used on Lithium batteries. Only the CTEK CS FREE is suitable for boosting Lithium batteries using adaptive technology.