The Sterling ProAlt C is effective, simple and fast to install. It transforms the output of your alternator into a sophisticated multi-stage battery charger resulting in faster and more complete charging of your battery bank(s). Integral split charge facility. No alternator modification required. Multiple alternator inputs up to 130amp. Battery and alternator temperature sensing. Dimensions (L x W x D): 250mm x 180mm x 70mm. Weight: 2.5kg.