This is the CPU controlled Reverse Pulse Technology Battery Charger from Ultipower.
Reverse pulse charging technology (patented) desulphanates and revives deeply discharged batteries.
Ambient Temperature: -20°C to +50°C
Cooling: Fan Cooling
Charger Type: 7 stage, full automatic switch mode
Batteries: 48V lead-acid batteries
Dimensions: 260 (L) * 700 (H) * 115 (W) mm
Net Weight: 3.8 KG
Protection: Reverse polarity, output short circuit, overload.
Digital display shows: Charging stage, voltage, amp flow, temperature
Suitable for 48v batteries between 80AH and 340AH. It can charge conventional Flooded Lead Acid, Calcium, VRLA & GEL batteries.
Reverse Pulse Technology
It will charge for a few seconds and then for a few milliseconds pulse the current in the opposite direction.
1 Reducing battery internal impedance, temperature rise and gassing (by up to 15%)
2 Restore the sulfate into liquid to recover battery capacity.
3 Maintain battery, extend battery service life. This will helps you to cut considerable costs on battery maintenance.
Once you use an Ultipower reverse pulse battery charger you will not use another type ever again.
Comes with 12 month RTB Warranty
The product manual for this unit is here: https://waveinverter.co.nz/download/Ultipower-User-Manual.pdf