This UPS requires new batteries hence price, can be seen working very well built probably the best make you can purchase very heavy 111 Kg with batteries purchased as a project no longer required. The UPS SRT10KRMXLI is hard wired with various possible electrical connections. THIS IS COLLECTION ONLY WILL NOT POST I will be also listing a extra run time battery pack ( also require new batteries) that can be used with the UPS Also will be listing another SRT10KRMXLI 10KW unit as spares or repair as it has an error ( feedback relay welded this may clear with a cold start with batteries but I don’t have the batteries to try)