Attwood SL33-40-5 Gas Spring 15" Extended, 9.5" Compressed, 40 lbs. GOTOOL3 The Blue Sea 9159-BSS M-Series

The Blue Sea 9159-BSS M-Series Battery Switch Link Bus controls battery isolation and connection between battery banks and electrical loads

PowerCombi Pure Sine Wave Inverter/Charger - 12V - 2000W - 100 Amp Kit

or yearly basis

Its easy-to-read display allows you to keep track of up to four tanks in one place making it an ultra reliable option

Additional input to measure voltage (of a second battery)

Attwood SL33-40-5 Gas Spring 15" Extended, 9.5" Compressed, 40 lbs. GOTOOL3 The Blue Sea 9159-BSS M-SeriesPopular replacement gas springs. Made with bio degradable, no hazard to water, grade oil (WGK), making them the marine industry's most environmentally friendly gas springs. All springs pass ASTM B117, Attwood salt spray and a 30,000 cycle lifecycle test. Mounting brackets available separately.