Looks like I lost my good flashlight. Damn. Hope it turns up and wasn’t just stolen out of my car. :blobcatnotlikethis:

Maybe someone needed it more than I do, but I’m just scared about the #18650cell lithium battery inside of it unaccounted for. (It is a quality Fenix cell, with the safety stuff built in.) The self-discharge of 8% or so a month may render it fairly inert after awhile as long as it’s not punctured or burned…

What's with the prevalence of #18650cell batteries being sold in hardware stores and Challenger? Who's actually buying them?

I really like products that use #18650cell (that are user accessible). You can just have a small pile of charged ones with a dedicated charger to quickly swap out, and can increase battery life by getting a higher capacity one.

Leaving things plugged into a charger for hours before you can use them again sucks

@dom1no while quite a few came from laptops another place was

https://batteryhookup.com

Depending on your set up

https://batteryhookup.com/products/new-7-2v-30ah (fairly easy to reclaim and not glue like substances in the ones i opened)

or

https://batteryhookup.com/products/27-panasonic-ncr18650-cells-salvage-medical-packs-55-cents-per-cell

might be worth a look.

#18650cell #18650battery

@dom1no to me yes. I was able to disassemble two other batteries (which were dead) I built and combine them into another battery. All from reclaimed #18650cell

And to upgrade I just need better #18650cell s

Though probably not if it were a money saving venture, though I couldn’t have afforded the battery bank I’ve put together

In theory, I built myself a 12 kWh 24V battery in total

Not perfect, but complete

Will need to replace the wire connection later; and add BMS

#18650battery #18650cell

4 new batteries arrived last night. They were easy to separate…phillips screws and no glue ++.

They are disassembled, now time to clean up the nickel on the edges.

#18650cell

the Bluetti ac200max arrived.

So far as predicted it is both better and worse than expected.

It can power my micro wave, but at 27v it only pull ~220w from my #18650cell battery.

at the moment i can only charge it around 650w max

still learning about it

#Solargenerator

Finally done testing all of the cells for my new battery build.

About 50 didn’t meet my standards, but at least that still gives me enough to make the battery I’m planning to make.

Now for the 2+ weeks of leaving the cells alone to see if they self-discharge to much

#18650cell #18650battery

So far one cell is bulged; at the negative terminal, which is odd.

Considering I left them 'dead' in a shed for over 8 months, and now started to 'wake' them, this is a huge surprise.

#18650Cell

Assuming 50 or less bad cells, the battery i'm rebuilding should have +200Ah. Almost doubling what i currently have

32 tested 592 to go
Now for ~39 days of testing at 16 cells a day :(

#18650Cell

18650 batteries rewrapped. 🦸🔋
#vaping #vape #18650cell

Hackaday Prize 2022: A Backup Battery Pack - These days, we’re all running around toting smartphones and laptops that could alw... - https://hackaday.com/2022/09/05/hackaday-prize-2022-a-backup-battery-pack/ #2022hackadayprize #thehackadayprize #batteryhacks #18650battery #batterypack #18650cell

Hackaday Prize 2022: A Backup Battery Pack

https://hackaday.com/2022/09/05/hackaday-prize-2022-a-backup-battery-pack/

#2022HackadayPrize #TheHackadayPrize #BatteryHacks #18650battery #batterypack #18650cell #18650

Leider keine Antworten (weder hier noch anderswo) - also musste ich's selbst probieren. 😉

War doch nicht „out of the box“ verwendbar, also gibt's 'nen Blogbeitrag:

https://burningbecks.wordpress.com/2022/07/16/solar-powered-powerbank-18650-cells-removable/

#solarladegerät #powerbank #akkus #18650cell

There was no solar assistance this time

Not bad for a cheap DIY setup with all reclaimed cells

#18650cell

Got time to capacity test my 24v DIY battery.
The DIY battery theoretically has 6 kWh of capacity.

The test is charging my car; the car’s battery is about 7kWh.
The car’s battery is pretty much depleted; 0 miles of range

The inverter claims 90% efficiency
The draw on the battery should average around 65A.

The starting voltage was 28.4v & I plan to let the battery get to ~21.5v under load.
The test should take 4 hours or less, and probably get 10+ miles of range.

#18650cell

Saved a cool $0.40 on my power bill today, I think.

#18650cell

Finally got some time to actually test charging the car with the solar battery. It’s been running about 20 minutes, the terminal connection temperature is 31C, and all looks fine

#solar #18650cell

Hallo #schwarmintelligenz,

auf dem nächsten Festival würde ich gerne #akkus, Typ #18650cell, mit Sonne laden. Und den Andoiden natürlich auch.
#solarladegerät kombiniert mit #powerbank scheint es aber nicht zu geben. => Entweder Solar, oder entnehmbare Akkus. 🤷‍♂️

Gibt es da was passenderes, als https://www.waveshare.com/solar-power-manager-c.htm (+ Panel)?

(Gehe davon aus, dass die drei Zellen da parallel drin liegen, sonst müsste ich nämlich auch noch zusätzliche Akkus kaufen...)