The Carmanah CMH-AGM-100 is designed for heavy power requirements such as Solar and Inverter installations. It is easy to install and easy to carry with the built-in carry handles. It is designed for Marine, RV, Off Grid applications. The CMH-AGM-100 has gone through strenuous testing and is very reliable. It has been proven to be reliable and maintenance free for Carmanah' s Outdoor Lighting applications world-wide. This battery is an absorbed glass matt battery which is Sealed. The battery recaptures its own gasses so it does not need to have distilled water added to it like a wet cell battery. The CMH-100-AGM is tested to 110 amp hours at the 100 hour rate and 105 amp hours at the 20 hour rate. The CMH-AGM-100 has outperformed brand named Group 31 batteries when tested at our facility over a number of different temperature ranges.