50USD 12V200Ah VRLA Battery

The Sealed Lead acid batteries /deep-cycle batteries have been used to store energy for a long time - since the 1800's. They’ve been able to stick around because of their reliability and simplicity. 

Nowadays these batteries still a popular option amongst consumers looking for a cost-effective and long-lasting energy storage solution.

In the market 50USD 12V200Ah still at there, what is the difference before the normal price battery 12V@00Ah(180-200usd)

•  Case: 

• Separator: 

• Cycling(Depth of discharge): 

• Main Material in side:

• Lead plate thickness:

• Replacement:

                   USD$50-60/PC 12V 200AH - replace the batteries every 4 months

                    USD$180-200/PC 12V 200AH Battery - replace the batteries after 4-5 years

• Warranties:

                   USD$50-60/PC 12V 200Ah battery -  no real warranty service

                   USD$180-200/PC 12V 200Ah Battery - 3 years free replacement warranty