Hi. So my alarm in motorhome was saying leisure battery was overcharging. A 120w panel and victron 75/15 charge controller as been powering up my leisure battery fine for around a month. I connected up to a spare battery and its going up to 15.1 before I disconnect it cause seems to much thanks steve
What model charge controller? Under "Battery" in VictronConnect settings for the charge controller, what are your Battery Preset settings, Charge Voltage settings, Equalization settings.
So it's a Bluesolar 75/15? If it was me I would want to see settings, since these controllers are programmable. The Bluetooth dongle is $50 or so and the VE Direct to USB cable is around $30. Batteries are expensive... https://www.amazon.com/dp/B01LZ6WTLW/ref=cm_sw_r_cp_apa_i_dTijEb8EB23VR
Just to add a supplementary that my MPPT 75/15 BlueSolar also decided the world was a 24v one. The switch off / disconnect / cup of coffee / reconnect didnt work. Dongle arrived this morning and all is fine now ive reset it to 12v. From scanning the forum this does appear to be a recurring problem
Unfortunately I have the same victron MPPT controller and a 24v setup and today it kept spiking to 30+ volts even though it should not exceed 28.8 - it has the latest firmware. cannot keep using it if it continues to over charge the batteries
