A motorhome's engine battery starts the engine and feeds the cab: a completely different job from the leisure battery. Here you will find the NAIONICS EverStart sodium batteries, 12V 50Ah with 800A CCA and 100Ah with 1300A CCA, both with Bluetooth.
The criterion is cold cranking in CCA and the lead-acid equivalence: a 50Ah sodium unit rated 800A CCA covers a lead battery of around 1000A CCA, which suits most van diesel engines. Check external dimensions and polarity, because the engine bay leaves no margin.
Unlike lead-acid, sodium chemistry does not sulphate through the months of winter standing and keeps its cranking power at low temperature, just where motorhomes sit unused and start cold.
