Battery Draw Bogus Math? Peukert UPDATE 2
Update- 11 Oct 20, Update 2- 12 Oct 20 Thinking one 100AH battery that can be drawn down to very low SOC gives you nearly the same "usable AH" as two regular AGM or Wet batts, as seen advertized, ...
Forum Discussion
Yes real life comparison at the same load
To compare one battery to another of the same capacity
But one half load does not give you a 50% use time increase
In the specs you posted 1 amp aka less than 1/5 C20 rating gave 125 ampHrs , that's a 25% total capacity increase using a miniscule load
No way does 1/2 load give 3x the hours of use for the same SOC
1/4 C20 discharge load 1.18 amps
Showed 100hrs of use, total capacity 118 ampHrs
This is not smoke and mirrors
This is chemical reaction creating electricity
The slower the reaction the more efficient it is
It would be nice if MFG gave RC ratings at different loads 5 amp, 10 amp, 20 amp
Instead of 20 Hour use ratings, which have a different load for each battery to equal 20 hours of use capacity to dead, and possibly beyond recovery, I think the RC rating of 25 amps is based on leaving the headlights on with engine not running
Smoke & Mirrors that's advertising Dept
The specs tell the truth, but difficult to compare
Because they are a TIME STANDARD not a Load discharge standard
To compare one battery to another of the same capacity
But one half load does not give you a 50% use time increase
In the specs you posted 1 amp aka less than 1/5 C20 rating gave 125 ampHrs , that's a 25% total capacity increase using a miniscule load
No way does 1/2 load give 3x the hours of use for the same SOC
1/4 C20 discharge load 1.18 amps
Showed 100hrs of use, total capacity 118 ampHrs
This is not smoke and mirrors
This is chemical reaction creating electricity
The slower the reaction the more efficient it is
It would be nice if MFG gave RC ratings at different loads 5 amp, 10 amp, 20 amp
Instead of 20 Hour use ratings, which have a different load for each battery to equal 20 hours of use capacity to dead, and possibly beyond recovery, I think the RC rating of 25 amps is based on leaving the headlights on with engine not running
Smoke & Mirrors that's advertising Dept
The specs tell the truth, but difficult to compare
Because they are a TIME STANDARD not a Load discharge standard
