I have a battery charger, BBI brand, model BB80-3-240750D, 750AH, 48VDC output, maximum 120A. This is for charging a forklift battery, the battery is 24 cells. The equipment turns on and does the starting sequence, counts down 5 seconds and starts charging. However, in the display in which the current is shown, it shows an output of 4 to 8 amps (varies), when previously it showed 60 to 70 amps. It takes 8 hours for the battery to charge and the "dur" alarm is displayed, which means that 80% of the charge could not be reached, or sometimes it even shows the "Lo I" alarm, which is low current. If I disconnect it and use the forklift, the battery runs out very soon in about an hour. Attached the diagram, however I do not have the control circuit diagram, basically it uses a toroid-type shock coil to measure the current and monitors the voltage output, it sends it first to a small card and then to the one on the display, the control disconnect the equipment if it reaches the load and monitors it to not exceed. I have already checked the diodes, the 4 are in good condition, I even changed them to rule out that they were damaged. The transformer gives me voltage but it is somewhat low, around 48 or 49 that marks the battery alone. I made the connection indicated in the diagram to increase the voltage but it did not work. Please if someone has worked with these teams and could you help me. Greetings. [Img] https://cdn2.yoreparo.com/uploads/imagen_post/0003/60/5632ff486c61b70b21f9d59120f198f96073bc2b.jpeg [/img]

Dear Jorge, I am still neophyte in these matters but voltage is not the same as amperage, and your amperage seems to be given to you by the capacitors. proof by substitution (change those that appear in the diagram) you can also have a bad control card because it is something like the brain starts there and comments thanks