TLDR version: is the basic combination of 3 components (small 12V panel, charge controller, and small 12V SLA battery) sufficient, and safe, to act as a solar charged power source for a 12V circuit that operates at night. I am wanting to set up a basic night time light circuit where the battery is solar-charged through the day and the light runs off the battery during the night. I know all those existing solar LED lights that work on trickle charging a single LiPoFe4 (typically) will come to mind, but in my case just bear with me in running 12V, maybe 3~5W, intermittently. A 9V solution may be ok too, yet to test that. So I have things like the light and sensor controller part figured out, the only thing I don't have figured out is the battery side of things. I've worked with Li-ion 18650 cells before but in battery pack building or pack charging. I know you can get BMS boards but then they don't manage the charging, so looking for a 12V capable balanced charger, etc. it just seems a bit much. After more looking to how people typically use the 12V panels in vehicles and stuff, it looks like that might be the way to go and from reading it all I would need is the panel, controller, and battery. e.g. SLA: https://www.jaycar.com.au/12v-2-2ah-sla-battery/p/SB2482 Controller: https://www.ebay.com.au/itm/3A-12V-...=item213e7b98e2:g:HN8AAOSw1nRa7Aq9:rk:32:pf:0 Panel: https://www.ebay.com.au/itm/High-Po...8acb451c:m:mRMxXaRBY2MlQn8HS7dx6Jw:rk:16:pf:0 Would that all be it to it as a solar charged 12V DC power source? Are the consumer level "security alarm" SLA batteries safe to have in roof spaces (i.e. can get warm)? I do not have to go with this SLA route by all means if anyone knows of existing controllers for other battery types, or something easier for less coin. The part of the roof I am thinking of poking this out on gets a lot of afternoon sun.