Pre-Built Batteries

The latest and greatest! Huge capacity and endurance, with over 315 Ah of capacity and 8000 rated cycles the 315EX is the succesor to both the legendary SFK-300HP and SFK-275EX batteries. Available in both EX and EX+ (coming soon), the 315EX battery is equiped with the GEN 2 B switch, RS-485 data port (optional), Victron Communication, and triple heating modes (low temp charging, standby heating or disabled) making it the NEW ultimate battery!

The SFK-145HPX is our first 24v battery and its one of the most compact and energy dense 24v batteries on the market. The SFK-145HPX includes all of the excellent features from our 12v series including Bluetooth, Victron communications, multiple heating modes and an adjustable active balancer.

Best Seller! The SFK-300HP now in its 2nd generation with new features such as the GEN2 Switch, RS-485 data port, Victron Communication, and triple heating modes (low temp charging, standby heating or disabled) make it the ultimate battery!

An excellent budget battery for those do not require built in heating. Built with the same certified cells as the 275EX, the SFK-275SE includes options such as the GEN2B Switch, RS-485 data port, Victron Communication, and is also the lightest battery we sell (under 56 lbs).