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What chemistry did I mix? Also I have no intentions of using 18650s for anything. The K2 cells were from BatteryHookup, and I don't have any reason to not trust them as a supplier. As far as the cells themselves, as long as they're in the ballpark of advertised capacity I'm happy. That's to...

Also worth nothing, you could scale up the batterybloc kits to create whatever you want. They also have a kit for creating a lead acid 12v replacement using 120 26650 cells. 120 cells @ $2.12 a cell ($85 for 40 if you can find that ebay deal) = $255 + kit ($130) + (probably a nicer BMS for...

Or as low as $125, I just bought another 40 cells at a better price, to build a clone of this pack. I'll take pictures along the way for that one. I decided I'd had enough of the lead acid world after building quite a few ammo can and toolbox battery projects for charging things at camp. They...

Yikes, not exactly what I wanted to hear but good to know. What is considered fast charging for your bank? I'll be charging with the Victron 75/15 on the lifepo4 profile-200w solar. I only intended to use the monitor/charger/discharger in the beginning like you say, then periodically to check...

I've blown up an air mattress a handful of times over the course of 5+ years. Only because integrated 120v pump. Generator runs solely to convert to DC. Can't really think of any reason I have anymore to carry an inverter.

If you have a rather predictable load (solar keeping battery system floating all day, fridge the only draw in the evening) could one just buy an ammeter battery monitor for 1/10th the price? I figure the worst my setup will see is an uncharacteristically warm evening @ 10,000 ft, and a lot of...

Glorious news. I'd probably shoot for a 24v (so what, 33.6v max) system but that might be pushing it per your link specs, and who knows what's inside the chinese bluetooth mini amps. I wouldn't cry if I smoked a $10 USB charger, but a $35 amp would be less enjoyable. Now, if only my Whynter...

Yeah quite a few power banks that have PD in/out ports, I think I've seen one as high as 45w in/out. Wondering for anyone who may know, these typical cigarette lighter to USB adapters, and similar panel mount circular ones - almost all have 12/24v in the listing. Is this simply taking a...

Woah, had no idea this was possible with forscan.

Dang dude I can't get more than 14.8 in Colorado or anywhere east either. Tons of tank to tank interstate runs at 65-75. Jealous you're getting that lifted twice as much as I am and with larger tires.

I wish this were a lifepo4 build, it's two 9ah agms in parallel absolutely crammed in to a small ammo can. I'm also eyeing headway 38120 8ahs on ebay but I'd probably be much better off buying a Dakota 10ah for a hundred if I needed another portable ammo can. 3.7v 18650 route is intriguing...

Damn that sucks. If I had seen that model for a reasonable price, like they are now, I would have definitely with an all-in-one solution. Most of the ones I've found on eBay are quad-output though, and I can't figure out what worldly purpose that would serve in a portable application. I...

Are you familiar with any off the shelf option for this? I have two 100w panels in series and occasionally carry a generator on what little space I have available on the rack. Depending on direction of travel and where the sun is, this nukes my output. I had no idea there was a solution for this.

Ahh yes the thread I was waiting for. I use a Necktek USB PD charger which was confirmed to charge at 45w. I find this to be sufficient for my 13" 2017 MBP, and was even sufficient for my 15" 2017 MBP with touch bar and blabla. This is all while running hog applications and compiling code...

Cool, planning on getting a battery monitor for this new setup to satisfy curiosity, but in thinking more about your third point here, there was definitely something squirrely with the battery. The fridge cycles properly and I actually ran it on the load out of the charge controller, so I know...

Not wanting to create another thread when this one's right up my alley, given cheap deep cycle discussions and dual 6v... 2017 F150, can handle weight of 2x6v without nearing payload limits 200w Solar / Victron charge controller Should I install the two 6v GC batteries I purchased in my truck...

I guess at the end of the day I may as well be connecting a lead acid jump pack, which have existed forever and use the same type of batteries, to a 10 amp fused cigarette lighter in a driving car. So in googling that, I find people still discouraging it, or mentioning that the good portable...

Uh oh edit: I just learned a lot of these black UPS-type batteries that I use are 'AGM Sealed Lead Acid' batteries and the truck bed batteries flooded lead acid. Implications? Great, the post above explained a lot. There are some DIY concepts that I've never been able to grasp and I've done...

Maybe I've been reading and youtubing too much about lithium systems. Something something current inrush. Any thoughts on utilizing the switched load output (rated 10 amps) for some sort of isolation effect, like forget on tailgate all night playing, plugged in, and after the house battery...

The 6v house batteries are not AGM, nor is the small battery, and reason for not wanting to directly connect them is that the boombox might see a lot of play after-hours and wind up extremely far off from the house batteries voltage come morning. I hadn't thought about treating this connection...