General > General Technical Chat
Rechargable vs. Non-Rechargable Batteries - AA/AAA Size
retiredcaps:
New color ones are made in Japan according to
https://forums.redflagdeals.com/ikea-ladda-aa-aaa-3-99-4pack-rechargeable-batteries-kvarts-chargers-regular-batteries-50-off-new-ladda-5-pack-2468570/37/#p34608743
The above thread mentions it on sale for $4 CAD for a 4 pack 2450mAh AA cells. That's a smoking deal.
VK3DRB:
--- Quote from: SteveyG on July 14, 2021, 09:42:08 am ---I seem to end up with bad experiences with Eneloops, I'm not sure how they have the reputation of being good. The last set decreased massively in capacity after about a year and a half. I left some others for 6 months sitting in my flash guns with the power switch turned off but they now no longer accept more than a couple of hundred mAh charge...
--- End quote ---
If you got them on eBay up until a few years ago, they might have been fake Eneloops coming from the Chinese side. It appears those sold now are legit, but you can never be sure.
For other batteries, most of those sold are from con artists who quote ridiculously high capacities. About 5 years ago I bought maybe 20 different type of batteries from different eBay vendors. None of them except one had the mAh capacity they stated. The one was bought from an Australian vendor who guaranteed the capacity, of course at a higher price.
I have never had problems with genuine Eneloops. From first hand experience, Ikea's Ladda are excellent batteries too.
VK3DRB:
Another fraud out there is portable USB battery storage. The manufacturers deceive the public with their mAh ratings. Almost all of them, according to a friend who tested a range of these devices.
They will state, for example 10000 mAh. It might be... at 3.7V! But the output voltage is 5V for USB, not 3.7V. If it was 10000 mAh at 3.7V, it is going to be roughly 7000mAh at 5V assuming 95% DC-DC converter boost efficiency. The manufacturers are liars and are snake oil salesmen.
eBay is full of outrageous battery capacity claims. Here is one snake oil salesman right here in Melbourne...
https://www.ebay.com.au/itm/203517054603?
retiredcaps:
--- Quote from: VK3DRB on July 15, 2021, 11:48:38 pm ---I have never had problems with genuine Eneloops.
--- End quote ---
Yep, fakes.
https://eneloop101.com/batteries/real-or-fake/
I always bought mine Eneloops or its other branded variations from brick mortar stores.
David Hess:
--- Quote from: VK3DRB on July 16, 2021, 12:04:31 am ---Another fraud out there is portable USB battery storage. The manufacturers deceive the public with their mAh ratings. Almost all of them, according to a friend who tested a range of these devices.
They will state, for example 10000 mAh. It might be... at 3.7V! But the output voltage is 5V for USB, not 3.7V. If it was 10000 mAh at 3.7V, it is going to be roughly 7000mAh at 5V assuming 95% DC-DC converter boost efficiency. The manufacturers are liars and are snake oil salesmen.
eBay is full of outrageous battery capacity claims. Here is one snake oil salesman right here in Melbourne...
https://www.ebay.com.au/itm/203517054603?
--- End quote ---
The same applies to 18650 cells sold on Amazon. I have no idea which ones have truthful specifications.
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