7/28/2023 0 Comments Deep cycle batteries costcoreserve of "65" and "109 Ah 1 amp. Any thoughts on whether the Costco Interstate 27DC #850982 is actually rated at 96 Ah or some other number? However, I am hesitant to rely on this number because Costco is known to use their buying power to persuade manufacturers to reduce features/capabilities for "Costco only" items in order to reach a price point. There is an Interstate group 27 marine battery on Interstate's website, model SRM-27 with a MSRP of $121.95, which shows identical CCA, CA and reserve capacity as the Costco Interstate 27DC #850982. However, I would like to confirm the Ah for this battery to help determine how well it will match up with a 100 watt solar panel and will hold up to the draw of an Engel 45 12v fridge on days when the panel can't be used. This should fully put a stop to the terminal (and tray) corrosion issues occasionally seen with these batteries.ħ50 CA 600 CCA 160 Reserve 25 amps - handwritten in counter book?]īetween these two, I am inclined to pick the Costco Interstate. One Year Warranty Trojan Battery company has been making batteries since the 1920’s and use superior materials when compared to the department store 6 volt deep cycle battery. With any of these batteries, I suggest popping off the vent caps and put a wrap or two of teflon pipe thread seal tape around each of the plugs and then reseat them onto the battery (without this, over time they tend to seep a small amount of acid out from under there since they don't have a real seal, it's just plastic against plastic). Past East Penn deep-cycles I've had never lasted less than 8 years, I have one currently that's been in service since 2004). These are USA-made (East Penn) and should be a little longer lived (at least I hope. They are made by Johnson Controls.Ī little higher up the quality ladder (though a bit harder to find) is the Deka #DP27 Marine Master (and is what I have in my BII currently). The battery itself is rather average, but for $80 for a #27 it's hard to beat (should last 4-5 years, or at least that's what I got out of a pair of identical Delco Voyager batteries I bought around 2009). ×2, Costco seems to be the best overall value in a deep-cycle battery.
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