Replies to This Discussion

Permalink Reply by David J. Beaulieu on December 17, 2018 at 7:51pm

Jan, thanks for posting.   Where the batteries rated approx same Amp-hrs?  Dave

• ▶ Reply

Permalink Reply by Jan Eggenfellner on December 19, 2018 at 5:48pm

No Dave, the lithium is 12 amp hrs and the lead acid was 7 amp hrs The batteries were sized based in physical size and to be similar in weight. Lithium 3.75 lead acid 5.75. Hope that helps. 

• ▶ Reply

Permalink Reply by David J. Beaulieu on December 19, 2018 at 8:44pm

It does...thank you!  Again appreciate you posting your testing. Cheers!

• ▶ Reply

Permalink Reply by charlie rosenzweig on December 19, 2018 at 11:06pm

For those interested in this topic, there is considerable discussion about the need for over voltage protection when using a lithium battery.

This has been discussed extensively on the Vans Airforce forum.   Essentially, it is highly recommended.   It gets a bit convoluted when realizing some folks use alternators with a just a single "B" wire, and some use alternators with external "IG" or "Field" windings wire - and with that begins the discussion of using a crowbar overvoltage protection on either the Field wire and or the "B" wire - which creates the ability, in most cases, to "trip" a relay to stop the alternator's ability to generate electricity at dangerously high voltage...

I encourage folks using Lithium batteries to educate themselves on this topic.

I am confident Jan will jump in here too and talk about Vikings approach to this.

Charlie 

• ▶ Reply