Google for the Deka/ Duracell sizes
black one is the GC2 - 215AH Deka Pro-Master GC10,
gray one is the EGC2 - 230AH called the GC15,
a 235AH is the GC25
Deka delivers a quality battery, especially for lead, and for the price. But if you can get T-105s locally for within say 15% of the per-Ah price, go for that.
Other top notch true deep cycling FLA makers besides EPM and Trojan include U.S. Battery, Crown and Superior.
Rolls/Surette is in another league and priced accordingly.
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Renogy is not great, they just market relabeled low-ball cheap chinese.
They used to have great CS attitude, now not so much.
But never fully trust any charge source, even with an $800 charger, always verify periodically at the bank posts with your own separate known-good DMM and ammeter.
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