another source for agm batteries
Hi, It's time for me to consider replacing four of my batteries that are now 8 years old. I came across this on Amazon. Any one have an opinion on this company? http://www.vmaxchargetank.com/...
Forum Discussion
Salvo wrote:
Very strange charging spec. It's more like a lead acid battery.
Recommended charge rate: 0.1C
Max charge rate: 0.25C
The Deltran AGM info gives charging at 0.4C. That's more like it for an AGM battery. Fast charging is one of the main attributes for AGM.
SLR100-8 Specs:
VOLTS 12V
AMP HOURS 100AH
WEIGHT 68LB
SIZE : L=12.1" W=6.7" H=8.2"
MAX. CHARGING CURRENT: 25A
MAX. CHARGING VOLTAGE: 14.7V
RECOMMENDED: 10A, 14.5V
The time in bulk is about 1.75 hours at 20amps = 35AH. ( 35/50=70% SOC start taper, which is about right IMO) But then it does 1.5 times the 1.75 or 2.63 hrs in Absorption at average 9.5 amps =25AH and 35 + 25 = 60AH on a 50AH battery. Then it is supposed to be somewhere just over 95% so it keeps charging for longer.
Since AGMs don't gas like a Wet where did the extra 20% AH or so go?
