Rutiger
100 W
Hi,
I need some lighting for my workbench and want to make something myself. I have some spare lithium ion 18650 cells and want to use them to power some chip LEDs, but use a solar panel to charge the batteries.
I've done a lot of research myself and asked questions, but haven't been able to find anyone who's confident enough in their answers. My main question is around whether I need a specific "solar charge regulator" between the solar panel and the battery, or if I can just use an appropriate regulator, diode, and a BMS? What are the technical differences between the two methods?
There seems to be very limited options available for a solar specific regulator for lithium battery voltages that are less than 5A in size. Does anyone see any issues with my idea? What am I missing?
LED example: http://www.banggood.com/5_5W-56led-COB-LED-Chip-450mA-WhiteWarm-White-For-DIY-DC-12V-p-959057.html
Solar panel (17.5v 10w): http://www.ebay.com.au/itm/3-5-4-5-6-12-17-5-18V-DIY-Solar-Panel-Module-System-Solar-Cells-Phone-Charger-BO-/351491824779
BMS example: http://www.ebay.com/itm/3S-packs-11-1V-12V-20A-Lithium-Battery-Protection-BMS-Board-W-Balanced-Charging-/182172387871?hash=item2a6a520a1f:gcsAAOSw3YNXYbbZ
Standard regulator: http://www.ebay.com/itm/DC-24V-to-12V-5A-60W-Buck-Converter-Step-Down-Car-Power-Supply-Voltage-Regulator-/201047000729?hash=item2ecf55c699:g:LFAAAOxyiOxRyoYa
Solar specific regulator: http://www.ebay.com/itm/SL02B-10A-10A-12V-24V-solar-charge-controller-li-ion-lithium-battey-regulators-/252366892935?hash=item3ac23d2f87:gwcAAOSws8ZXHXv5
I need some lighting for my workbench and want to make something myself. I have some spare lithium ion 18650 cells and want to use them to power some chip LEDs, but use a solar panel to charge the batteries.
I've done a lot of research myself and asked questions, but haven't been able to find anyone who's confident enough in their answers. My main question is around whether I need a specific "solar charge regulator" between the solar panel and the battery, or if I can just use an appropriate regulator, diode, and a BMS? What are the technical differences between the two methods?
There seems to be very limited options available for a solar specific regulator for lithium battery voltages that are less than 5A in size. Does anyone see any issues with my idea? What am I missing?
LED example: http://www.banggood.com/5_5W-56led-COB-LED-Chip-450mA-WhiteWarm-White-For-DIY-DC-12V-p-959057.html
Solar panel (17.5v 10w): http://www.ebay.com.au/itm/3-5-4-5-6-12-17-5-18V-DIY-Solar-Panel-Module-System-Solar-Cells-Phone-Charger-BO-/351491824779
BMS example: http://www.ebay.com/itm/3S-packs-11-1V-12V-20A-Lithium-Battery-Protection-BMS-Board-W-Balanced-Charging-/182172387871?hash=item2a6a520a1f:gcsAAOSw3YNXYbbZ
Standard regulator: http://www.ebay.com/itm/DC-24V-to-12V-5A-60W-Buck-Converter-Step-Down-Car-Power-Supply-Voltage-Regulator-/201047000729?hash=item2ecf55c699:g:LFAAAOxyiOxRyoYa
Solar specific regulator: http://www.ebay.com/itm/SL02B-10A-10A-12V-24V-solar-charge-controller-li-ion-lithium-battey-regulators-/252366892935?hash=item3ac23d2f87:gwcAAOSws8ZXHXv5