ThuMentaliss Posted November 29, 2023 Share Posted November 29, 2023 As above were their issues involved Quote Link to comment Share on other sites More sharing options...
Rojie Posted November 29, 2023 Share Posted November 29, 2023 3 hours ago, ThuMentaliss said: As above were their issues involved IMHO this is not the way to go . Are we talking starter battery or leisure battery ? Either way, I believe Lithium batteries need a different charging regime than Lead Acid or Gel. A starter battery needs to deliver very high current without damaging itself. I believe the properties and discharge characteristics of the three technologies are quite different. Not sure the Toyota alternators are suitable for Lithium technology. Interesting though, I need to research this. Quote Link to comment Share on other sites More sharing options...
ThuMentaliss Posted November 29, 2023 Author Share Posted November 29, 2023 Lithium batteries are generally not recommended for use as an engine start battery (Burstner source) Quote Link to comment Share on other sites More sharing options...
Ceri Posted November 29, 2023 Share Posted November 29, 2023 As a starter battery - no. It's too hot for one under the bonnet and they don't like delivering the peak current to start the engine. As a second leisure battery - yes. It's under the driver's seat. You can't directly connect to the alternator as the Alphard has an adaptive voltage alternator. When it's cold it'll deliver 14.2V, but when it's warm, it drops back to 13.4V - too low to charge Lifepo4 chemistry. You can use a DC-DC charger such as the Victron Orion that will give the correct charge profile for lithium. 1 Quote Link to comment Share on other sites More sharing options...
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