I am gary from Topin battery, recently we has developed a new type of battery, AGM+GEL BATTERY.
AGM+GEL have similar structure with conventional VRLA battery, but inside we adopt new technology to use the mixture of gel and sulfuric acid instead of acid only.
The TPG series battteries have obvious advantages compared with conventional ones:
1 longer stable service life-increaed by 30%
2 more discharging cycles-increased by 50%
3 cheaper priced compared with the real gel battery,but do the same functions as the real gel battery does.