Review on Renogy 12V 100Ah Lithium LiFePO4 Deep Cycle Battery With Bluetooth,2000+Deep Cycles,Backup Power Perfect For RV,Off-Road,Cabin,Marine,Off-Grid Home Energy Storage by Etai Gopala

UPDATE: Batteries were exchanged and monitor stopped working again. RJ45 ports on one of the batteries full of water. The IP54 rating should mean that the batteries are splash proof. They are not. Mine are installed under the hood of a motorhome. Splashes occur.The idea of a "Smart Battery" with a tightly integrated monitor is a good one. However, there are a couple of design issues. Installed the batteries 9/20. I then gradually lost functionality until the monitor would not work anymore on 10/8. The pictures were taken on 10/12 and show corrosion on the contacts and cable. I first lost the ability to put the batteries into shelf or storage mode. Then the monitor only showed data for one of the two batteries and finally it showed zero-everything, including zero batteries. Renogy needs to go back to the drawing board. My batteries are mounted under the hood of my Class A motorhome.The communications ports are centrally placed, thus interfering with a central bracket to strap-down the batteries. In most cases a strap or bracket will go over the middle. The ports point up and don't seal with the connectors, allowing pins inside the ports to corrode. The ports, when not used, are covered by a single rubber flap. One port is used for a single battery installation and so the other is uncovered and open to the environment. In a group of batteries this is true for the last battery in the chain.The associated monitor is also first generation and nearly unreadable with the backlight on or off. More work is needed.I lost the use of the monitor due to the corroded ports and wonder if the ports offered an ingress point for water onto the circuitry underneath. I am currently working with the manufacturer. Probably owning to the fact that this is a fairly new product, phone support didn't really seem to understand the product.