blocking

Yeah, so I'm using the XL4015 with a 100w solar panel. I have the XL4015 set to 7.35vdc to charge a SLA 6v lantern battery. The diode is working, but the current is limited to 200mA, instead of the full 300+ mA it would get if there was no 1N5822 diode in series, to prevent the darkness at...