How to not blow up your Alternator when charging Lithium

Charging lithium batteries from an alternator, be that in a boat or vehicle, presents some challenges when compared to the straightforward nature of charging lead based batteries.

The video in this blog highlights these lithium challenges and shows you what can happen when things go wrong – namely alternator overheating, smoke and an expensive alternator replacement, not to mention the risk of a battery thermal event.

Challenges when charging lithium with an alternator

The two key issues demonstrated in the video are:

  1. Alternator overheating
  2. Alternator rectifier diodes failing because of over voltage after disconnect by a BMS


It’s only by using the correct lithium battery charging solution/s in a given situation, that you can be sure of system safety.

However, Using a Victron Orion-Tr Smart DC-DC charger will be the best option when you are charging your auxiliary battery on your vehicle and vessel.

Victron Orion-Tr

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