Looking for a new battery or upgrading your old one? Lithium Iron Phosphate (LiFePO4) or Lithium Titanate Oxid (LTO) are highly performing technologies ideal to place in kind of battery application. Compared to lead-acid, GEL and other old tech., Lithium may seem complicated to use. Our guides show the installation step-by-step. Lithium is easy to use with the right information. Once installed, they often remain maintenance free for several years. Relays are an important part of such battery, together with protection and monitoring electronics, they secure the years of service. Dual SmartRelay is designed especially with BMS123 Smart and with next to none self-consumption makes the ideal part of any lithium battery. SmartRelay on our shop: https://www.ev-power.eu/Battery-Management/BMS123-Smart-Dual-Latching-Relay.html BMS123 Smart on our shop: https://www.ev-power.eu/Battery-Management/123-Smart-BMS-Complete-Set-4-cells-with-Bluetooth-4-0.html Lithium batteries and cells: https://www.ev-power.eu/Winston-40Ah-200Ah/ LTO cells: https://www.ev-power.eu/LTO-technology/ You can, too, follow us on Facebook (https://facebook.com/gwlcompany/) or Twitter (https://twitter.com/GWLPower) for more frequent updates.