hour
Observer
Has anyone looked in to this for DIY packs? The best I can find (for boards/modules) are 18/24w max USB-PD modules that only work for 3.7V lithium batteries, 1-series.
I've bellyached about this in recent years on here but now there are so many portable power station 'solar generators' out there that offer it (with 3S 3.7v / 4S 3.2v lifepo4 inside) that I can't imagine it's proprietary and these no name companies have rolled their own.
For the power stations I guess it's possible they're negotiating 20v from the PD source and piping that in to their MPPT. I know some power stations with 120V input have a 24v PSU inside to do exactly this. I just kind of doubt it though, since no name power banks are doing it too and they lack MPPTs. Somehow Monoprice's Obsidian 26800mah power bank offers 87w charge/discharge, and while I'd be happy with 60w, 87 would be cool too.
Reason: I just bought a spot welder and am assembling my third portable 12v pack, 12 cells in parallel * 4 series for an estimated 640wh. Plugging in for ~12 hours assuming it was dead wouldn't be the end of the world, it'd in fact be my preferred method of charging before a trip.
Would allow me to charge from a wall charger, my 90w USB-PD car charger, or even B2B house bank to portable pack.
Also, has anyone found a source for 8mm panel mount jacks? Those are featured on damn near every power station but I can't find any to save my life. I know they also go by 8.0x2.5mm or 7.9x2.5mm, all dead ends. If no name brands have these components, where the hell are the modules and jacks on ali/banggood/amazon/etc?!
I've bellyached about this in recent years on here but now there are so many portable power station 'solar generators' out there that offer it (with 3S 3.7v / 4S 3.2v lifepo4 inside) that I can't imagine it's proprietary and these no name companies have rolled their own.
For the power stations I guess it's possible they're negotiating 20v from the PD source and piping that in to their MPPT. I know some power stations with 120V input have a 24v PSU inside to do exactly this. I just kind of doubt it though, since no name power banks are doing it too and they lack MPPTs. Somehow Monoprice's Obsidian 26800mah power bank offers 87w charge/discharge, and while I'd be happy with 60w, 87 would be cool too.
Reason: I just bought a spot welder and am assembling my third portable 12v pack, 12 cells in parallel * 4 series for an estimated 640wh. Plugging in for ~12 hours assuming it was dead wouldn't be the end of the world, it'd in fact be my preferred method of charging before a trip.
Would allow me to charge from a wall charger, my 90w USB-PD car charger, or even B2B house bank to portable pack.
Also, has anyone found a source for 8mm panel mount jacks? Those are featured on damn near every power station but I can't find any to save my life. I know they also go by 8.0x2.5mm or 7.9x2.5mm, all dead ends. If no name brands have these components, where the hell are the modules and jacks on ali/banggood/amazon/etc?!