WaveCharge 4-Bank 12V 12 Amp Battery Charger and Maintainer 48V or in a locked compartment

or in a locked compartment that puts it out of the standard charger cable's reach

jump starting a dead car battery without jumper cables takes under two minutes:

Commercial vessels and industrial equipment increasingly use Lithium battery systems for their weight and cycle life advantages — the PowerPlus™ 24V 20 Amp supports both chemistries at full 20 Amp output

Lithium delivers consistent peak Amp output in cold weather when lead-acid units lose capacity most

25 Amp IP65

WaveCharge 4-Bank 12V 12 Amp Battery Charger and Maintainer 48V or in a locked compartmentFour battery banks. Four independent ISM charging circuits. The Battery Tender WaveCharge 4 Bank is the complete on board charging solution for boats and vehicles with complex multi bank electrical systems delivering 3 Amps per bank simultaneously to up to four separate 12V batteries, each running its own ISM (Infinite Sequential Monitoring) cycle with its own chemistry profile, independently. Four Bank Charging for Marine and Automotive Applications