This is the model GPS 12100 B 12.8v nominal. Retrofitted with active balancer included. The batteries are top balanced then capacity tested and certified by our technicians. This battery tested 100 ah.If you are using a solar to charge, here are two settings you need to know. Absorb charging voltage is 14.4V, float charging voltage is 13.8V. Otherwise use a lithium battery charger. This item is in the category "Consumer Electronics\Multipurpose Batteries & Power\Rechargeable Batteries". The seller is "danlab007" and is located in this country: US. This item can be shipped to United States.