Lithium battery as starter assist
I am considering changing out the house batteries with a single 100 ah lithium. In certain conditions I need to use the battery combiner dash switch to start the engine. Would this still be possible...
Forum Discussion
ramsaymike wrote:
I am considering changing out the house batteries with a single 100 ah lithium. In certain conditions I need to use the battery combiner dash switch to start the engine. Would this still be possible with the lithium battery? Thanks.
The short answer is NO, unless there is a massive Li battery bank.
Why? The battery management systems on Li batteries limit the output to about 100 amps (some are more some are less). The starter draws hundreds of amps.
You could do what you want with an SiO2 battery, which are able to do a 4C rate continuously, and 9 C for 5 seconds (400 amps from a 100 amp-hour battery)
