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I did not capacity test them individually, no

Thanks, I did amd neither one would hold a charge above 13.3. Ebay seller is actually issuing a refund! Thanks for responding!

The ebay seller, responded with this as well. Does that sound like the right approach?

charger was set to 14.6. I'll try discharging to 10v but would that really make up another ~100 AH? the problem is that they don't seem to hold a charge over 13.4v

I realize this is an older thread, but thought I'd post this here anyway. This is copied from a post I made in the Valence super thread. Hi all, I'm trying to work out what the capacity of my 2 u27-12xp batteries is. I was hoping someone might be able to check my method for testing them. I have...

Hi all, I'm trying to work out what the capacity of my 2 u27-12xp batteries is. I was hoping someone might be able to check my method for testing them. I have the 2 modules wired in parallel, and am testing them by running a space heater off of a renogy 2000w inverter/charger. I am measuring the...

Hi all, so I've bought the Thunderstruck VC1 and am going to be connecting it to two contactors to control high/low voltage cut off. I'm wondering if anyone has any ideas how to connect them in such a way as to not have them burn out the solar charge controller if the VC1 decides to disconnect...

Thanks for sharing that email, that's good to know that you can set a high/low temp cut off with it. If it only balances the cells in the individual modules, do I need to worry about the modules being out of balance with each other with two of them in parallel? (assuming I've done a good job...

Awesome! I am going to pick one up for sure. I'm very grateful of all the information here, it's been super useful!

Does anyone know if the fans on these units run when charging from the solar panels, or just when in AC charging mode. I want to pick up the 1000w model, but not if the fans run to cool the MPPT charger.

(Had this posted in the beginners section, but it was mentioned that I should repost it here) Hi all, I've been really appreciating reading this forum and have gotten lots of useful information from it so far. I have a few questions that I couldn't find the answers to on the Valence super...

Thanks, I will do that

Hi all, I've been really appreciating reading this forum and have gotten lots of useful information from it so far. I have a few questions that I couldn't find the answers to on the Valence super thread post (maybe I just missed it?) I've bought 2 of the U27-12xp batteries thinking they were...