Recently I've been reading about newer type of batteries vrs AGM.
It seems that for what we need, power to crank our starters the newer LiPoFe type batteries do very well but are not suited for use with a trolling motor.
The amp-hour and CCA, cold cranking amps rating a re more suited to lead-acid and AGM. The newer batteries can heat themselves up prior to being used to start on very cold mornings, colder than I'll be starting my LT to go for a ride.
One company in the USA that builds these batteries has a nifty charger that will balance charge each cell in array of their batteries, and it will also balance discharge each cell and then balance charge them up again.
I assume that the "battery" will last longer, deliever the cranking capacity longer if each cell can be brought to the same voltage since they should have the same internal resistance, and that when their voltage is not the same the lower voltage one(s) are "called upon" to deliever more amperage than higher voltage ones?
Also mentioned is that if a charger, a trickle charger cuts off before 14.6 V, it cannot fully charge the newer batteries.
Today while thumbing through a mag I discovered that a company called "West Mountain Radio" sells a CBA-IV battery analyzer that one can set for amp-hour and discharge rate which is useful to help gauge if its time to replace rechargable batteries, like auto and mc ones.
The author tested NiMH batts vrs Alky and discovered that the new ones come close to their 2.6 Ah ratings of Alks, they have twice the capacity of Alks and a more consistent voltage during discharge time.
The article will be on the ARRL website, www.ARRL.org
but I don't know if non-members can read the article.
Best from tucson