I bought a Duracell Ultra Platinum AGM BCI Group 24M Deep Cycle Marine
& RV Battery from the store in Columbia, Maryland in August 2018.
By May 2019 the battery will run the vent fan in my RV for not more than
20 minutes. It will not hold a charge. I thought, "No problem, there's a 30 month replacement warranty."The
Batteries Plus store in Columbia, Maryland charged it overnight and
'tested' it and claimed it is fine, there were no dead cells, and
Claimed that it was now fully charged.It's not. It died again after running the fan for 20 minutes. It will not hold a charge. Batteries Plus will not exchange it. They do not honor their warranty, using their 'test' as an excuse.