thegoogler
New Member
- Joined
- Apr 15, 2021
- Messages
- 108
I purchased a Bluetti EB70S. Not my ideal power station but I couldn't find anything LFP that had 8A+ DC output options without needing to use the stupid cigarette lighter plug. The EB70S can take 8A @ 12-28V input to recharge. I'm running a 12V fridge and would like to maximize charging.
I can easily tie into a fuse block I installed which only operates when the truck is running. That will give me 100W input @ ~13.5V. Or I can use a 12-24V converter off that fuse block to get 200W (8@ * 24V). Both of these only work when the truck is running though, which is fine when I'm overlanding or heading to camp, but if I'm at camp a few days I don't want to run the engine for 4+ hours per day to recharge the unit.
I have enough space on the roof rack to add a 100W solar panel. I could swap inputs every time I plan to park the truck or drive it, but that's a PITA. I'm debating my options... I think one would be to buy a cheap PWM/MPPT controller with 24V output and simply join the two with a Y cable since the Bluetti won't pull more than 200W and so this will give me 100W when parked or 200W when driving (either via the alternator or a combination of solar + alternator, I think). But, can I just Y cable the solar panel and 12V or converted 24V from the alternator right to the input of the Bluetti and let it sort out the voltage (which will be somewhere between 12V and 24V?)
Are there other sensible options? I don't need to charge the starter battery and in fact I'd prefer to keep it separate.
I can easily tie into a fuse block I installed which only operates when the truck is running. That will give me 100W input @ ~13.5V. Or I can use a 12-24V converter off that fuse block to get 200W (8@ * 24V). Both of these only work when the truck is running though, which is fine when I'm overlanding or heading to camp, but if I'm at camp a few days I don't want to run the engine for 4+ hours per day to recharge the unit.
I have enough space on the roof rack to add a 100W solar panel. I could swap inputs every time I plan to park the truck or drive it, but that's a PITA. I'm debating my options... I think one would be to buy a cheap PWM/MPPT controller with 24V output and simply join the two with a Y cable since the Bluetti won't pull more than 200W and so this will give me 100W when parked or 200W when driving (either via the alternator or a combination of solar + alternator, I think). But, can I just Y cable the solar panel and 12V or converted 24V from the alternator right to the input of the Bluetti and let it sort out the voltage (which will be somewhere between 12V and 24V?)
Are there other sensible options? I don't need to charge the starter battery and in fact I'd prefer to keep it separate.