More deep cycle

Reposting this message as first time it lost words suspect because it used the 'less than' and 'greater than' symbols


More deep cycle

I bought a 12v 100ah D C battery to power a waeco fridge and a 6 or 7 phase (can't remember which) mains charger. This circuit is not connected to the vehicle electrics. The battery has had one charge on the 30amp mains charger. The charge time was 12 hours. I used the battery for around less than 6 hours and then noticed the fridge had gone off. On reconnecting the fridge through to a second auxillary D C battery, I realised that the fuse holder was giving a bad connection (going on/off when moved, suspect the fuse holder wasn't optimum fit for fuse but all new correct parts, grrrr!! the fuse was fine/hadn't blown).

I put the first D C battery on the mains charger. Almost immediately it started beeping with warning light 'Faulty Battery'
I checked the battery voltage = 12.19v

I connected the battery via jump leads to the car for a few mins.
I checked the battery voltage and it was greater than 12.2v
I put the battery on the mains charger, it started running it's cycle then started beeping with warning light 'Faulty Battery'

I connected the battery via jump leads to the car for 30 mins.
I checked the battery voltage and it was 12.37v
I put the battery on the mains charger, it started it's cycle then ran for a longer time then started beeping with warning light 'Faulty Battery'

Anybody care to share any magic tips on recovering the battery (beyond replacing the battery, this one was only 3 days old!)?

Could the faulty fuse/connection have caused this?

Thanks

If you realy suspect battery just return it. Most deep cycle have 12month warenty and dealer should give it a thourough test in front of you. A reputable outlet will have no problems with this and if tests ok would most likely top up the charge for you as well.