I'm not sure. The place I bought it from would just try and tell me it is fine, and insult my intelligence. Their pitiful looking battery tester would probably read in the green on any battery hooked to it, that they wanted to read in the green anyway.
This battery is a replacement from a lightweight Marine battery they removed the label on and slapped a "extreme cycle service" sticker on. Then when confronted on the missing lead, just kept repeating and insisting that a marine battery is a deep cycle battery.
I'm just gonna use it till it cannot meet my overnight needs. I dont want to deal with that distributor again.