General > General Technical Chat

I Hate Batteries

<< < (13/20) > >>

BrianHG:
Everything you need to know, with charts and price comparisons...









ogden:

--- Quote from: MrMobodies on April 11, 2020, 10:20:53 pm ---So far I have had no problems with it charging the 18650 cells and I didn't buy the cheapest.

--- End quote ---
Unless you buy fake/noname/*fire cells - you are fine. Especially when buy from trustworthy sellers. Main rule of rechargeable cells - buy 1) proven batteries 2) from reliable sources.

MrMobodies:
I did look around for some genuine Sanyo cells and I couldn't find the one I wanted.
I needed 8 and I found a seller who has been trading for some time and that was in early 2017.

They are NCR18650DB. After last christmas the powerbank went flat when I using it and noticed the batteries have become unbalanced. Two of them measured 2.8v and rest were over 3v. I labelled them up and cycled them to see how much capacity left and I noticed the 2.8v ones were 200mah shorter than the rest but when I first got them they did charge over 3200mah or so.

Edit:

I think I put them in a different order than before they were charged

The 2.8v ones were in series where the they're labelled 4A/4B now in the picture.

ocset:

--- Quote ---    Also, when you take into account all the energy involved in battery manufacture, then batteries  really are an inefficient way to power things.

Bullshit. Batteries are currently most effective/compact way to store electrical energy.
--- End quote ---
OK thanks...true, but it wasnt  the point..the point was it would be more efficient (overall, all things told, including battery manufacture, trickle charging etc etc) to power things with a mains acdc adapter where possible.

duckduck:
Fellow battery hater here. Some folks love "cordless" things. I will go out of my way to find corded things. I hate how you have to worry if they are going to work and about when they are going to run out. The voltage testing. The leaking electrolyte in my damn Garmin. Ugh. :horse: I've recently dealt with multiple car batteries dying due to age and failed auto electronics. Also we've got a young child at home and they have many battery-powered toys. We buy great bricks of alkaline AA & AAA cells every other time we go to the store. 

I have to thank Jogri for his post in this thread. I've just ordered some rechargeable AAs and AAAs. I forgot that I've already got a nice Powerex charger and I also noticed that my new R/C-vehicle-battery charger will apparently charge any rechargeable battery chemistry. Yes, the ISDT chargers look nice.

Now, I have been softening. I used to love my pneumatic impact wrench (AKA rattle gun) for removing lug nuts, but a cow-orker sold me on cordless. He went Milwaukee 12v and I went Makita 18v. My god, these are handy as hell. I use my Makita impact driver and Makita LED flashlight every single day. A charge lasts months (I bought the big-mama packs) and recharging is quick and painless. I guess I'm totally OK with the Makita 18v system but I still hate AAs and AAAs with a passion.

I didn't realize that Fluke DMMs had low-battery indicators (yes, :palm: if anything had one, it would be a Fluke DMM - thanks eevblog forum!). That makes me feel better about the 9V batteries that have been in there for years (I still check them annually for leaking electrolyte).

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod