Charging phone from Leisure Battery

[TONYT25T25]

When I try to charge my mobile from the USB port in my solar Charge Controller with the Solar Panel connected, the voltage drops from around 13.5v to around 9.5v. When I do the same test connected to my main battery it only drops to around 12.7v, is this a sign my leisure battery needs replacing.

[Mocki]

Where are you taking these voltage readings from ?

[Stesaw]

Battery might be shot perhaps, could be a wiring issue. Make sure all the connections are solid.

But as mocki said where you measuring from? The battery or does your controller have a screen?

[TONYT25T25]

Where are you taking these voltage readings from ?

The readings are taken from the screen on the controller on bothe tests Leisure and then main battery.

[TONYT25T25]

Battery might be shot perhaps, could be a wiring issue. Make sure all the connections are solid.

But as mocki said where you measuring from? The battery or does your controller have a screen?

connections are ok, voltage taken from window or screen on controller.

[Mocki]

So with solar panel in sun it’s dropping just by putting a 5v 1amp load on it ? I suggest the panel isnt providing anything , or the leisure battery isnt connected , or is shot .
Check actual battery voltage at the battery poles

[TONYT25T25]

Thanks Steve, voltage same reading at battery poles, solar panel working as gives indication at controller. When disconnecting phone from usb port at controller and all conections still in place at leisure battery and solar panel, battery recovers after about 20mins. Should add this is a small portable solar panel that i use to keep battery.or batteries conditioned. Leisure battery only used for internal lighting and radio.

[TwinTurbo]

How small? What Wattage?

[Mocki]

I would have thought by now Tony , with all the posts you have made, you would include all relevant information to get answers that mean something in the original post????
Size of solar panel, size of battery ?
Your battery is dead i would say ……

[TONYT25T25]

Thanks all for feedback, trying to avoid innevitable I think, looks like a new Leisure battery is on the cards.

[TONYT25T25]

I would have thought by now Tony , with all the posts you have made, you would include all relevant information to get answers that mean something in the original post????
Size of solar panel, size of battery ?
Your battery is dead i would say ……

Good point Steve.