General > General Technical Chat

I Hate Batteries

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rsjsouza:
I have a love/hate relationship with batteries. A few comments on the related thread here.

duckduck:

--- Quote from: ogden on April 24, 2020, 04:26:09 pm ---Don't blame batteries when your device is crap. AA battery at 1.35V have more than half of remaining capacity. It can be considered empty at voltage below 0.8V.

--- End quote ---

I agree wholeheartedly. That toy is not what I would would consider "a well-designed electronic device". Perhaps I should expand the scope of this thread to "antipathy towards failure modes unique to batteries and poorly-designed battery-powered devices".


--- Quote from: paulca on April 24, 2020, 04:05:00 pm ---It dumped battery acid all over my carp fishing chair I keep in the boot.

--- End quote ---


--- Quote from: T3sl4co1l on April 24, 2020, 04:23:41 pm ---FYI, sulfuric acid does not dry out.  It becomes more concentrated, hastening decomposition and corrosion of everything it touches.

--- End quote ---


T3sl4co1l makes good points. Also, you can mix sodium bicarbonate (we call it "baking soda" in the US) into some water and rinse the spill with that. That will help neutralize the acid without staining or creating unhealthy fumes.

tooki:
Batteries are complex. Using them isn't. (I certainly cannot sympathize with the OP's gripes.)

What is hard is charging them optimally. That's what I've been working on (among other things) for a few weeks. NiMH may not catch fire if mishandled, but actually charging them properly is nontrivial. (Li-Ion/LiPo charging is actually simpler in principle, but they're unforgiving of even small mistakes.) Note that the manufacturers no longer recommend trickle charging, or even just slow charge rates, as they make detecting the ΔV too small to detect (if present at all).



--- Quote from: deadlylover on April 07, 2020, 01:25:57 pm ---If you have an IKEA nearby (or if they deliver cheaply), the IKEA LADDA AA and AAA NiMH batteries are very good. The made in Japan models come out of the only NiMH factory in Japan, which is where some of the famous Eneloops come from.

--- End quote ---
FYI, IKEA no longer sells the brown, made in China LADDA. They now only have the white, made in Japan eneloop-pro-in-disguise ones!


--- Quote from: bingo600 on April 07, 2020, 05:12:14 pm ---Ps: I might have to look into the IKEA LADDA , but they compare LADDA to Eneloop Pro ...
Strage as Eneloop Pro is spec'ed for 500 charge cycles , and LADDA for 1500  , Normal Eneloop are speced for 2000 cycles

--- End quote ---
1500 cycles was for the brown, made in China LADDA, which IMHO probably weren't Eneloops in disguise. They're discontinued now anyway. The white, made in Japan LADDA are 500 cycles, like Eneloop Pro, with exactly the same mAh ratings.

bluey:
I hate batteries too.

I feel much better having discovered eneloops and better chargers. I am using the temperature sensing Panasonic one that came in the Eneloop kit (ex USA B&H). But some gadgets really don't like the low voltage of Eneloops, especially the Panasonic AC remote control whose LCD is always dim. Since I can't get Eneloop in a 9V size, I have Toshiba 8.4V NiMH (ex Japan). They seem to work fine and aren't a lot more expensive than disposable alkaline.

Battery powered computer mice are a waste of effort - just use a cord because the mouse always works.

Battery powered drills for home use - the cost of the dead battery packs over the years is way more than the cost of the drill. Just say no and plug it in.

Car batteries are easy. They die after 3-8 years. Replace it when it doesn't behave. Nothing you can do will change that, despite what the clever Ctek charger thinks. Bunnings is good for Exide if you have a few days up your sleeve for special order.

Computer internal clock backup batteries are a pain, because nothing will tell you that it's not working and if it's in a laptop, good luck.

Lithium polymer batteries are stupid because they all swell up and die eventually and there's no way to tell how good the one you are getting will be.

Alkaline batteries are stupid because they all leak and will kill whatever you leave them in.

Raj:
I don't find it too annoying...I have a pack of amazonbasic nimh AA and AAA.I've also got some rechargeable lr2032 My 9v in multi-meters seems to last forever. And I've been modifying whatever I can, to use 18650 instead of any other battery. Also, I've been slowly replacing my wall clocks with PoE DIY clocks (3 out of 11 left). You just need time to convert everything that you can to a system that's most convenient.

Also, I suggest everyone to make their own gadgets whenever possible...I have a flashlight which is chargeable via usb and has cree 3w led
My TV,AC remote is an old Samsung S4 (no mod needed, it has an IR emitter). I've already mentioned clocks. For game controllers, I don't know much, I'm on pc...but my wireless mouse is used 10 hours a day and I recharge it's AA every 3 months

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