Review request for HKJ [Rechargeable Batteries]

Thanks Henrik.

I despise the “state of the art” in rewrapping technology (LoL!). The big cell manufacturers discredit themselves often also, even if to a considerably lesser extent. In my opinion, there's no good reason to put a never met specification on a label. There are some batteries which live up to their label specs, something esteem deserving.

I believe we should doubtlessly and respectfully point at the blamers.

Cheers :-)

I believe you are (also) talking about the cells I’ve posted above, right Barkuti? I also think they must be rewrapped, in the best of chances, some Sanyo with protection board, maybe!

Despite I agree with you on the “descrediting” of the original manufacturers, I can’t let myself forget that I’m a final user of a long chain, and that if a product is good at a lower price, I’ll try to grab what I need! Even if the “credits” for the core material go to others than those who sold me the “end product”.

Whenever I can, I buy “original” stuff , though!

Thanks HKJ and I’ll be looking for the tests! I ended up buying 2 of those 14500s, as I needed 2, despite being good or not so good :wink:

I wish you could add a filter to your battery comparator site.
Instead of just have them in alphabetical order you could have capacity and high current order.

It would help alot as you still testing cells and the list just grows longer.

Could you test these cells?

2pcs li ion 14500 rechargeable Genuine 14500 battery 3.7v 700mah high drain 12A
https://m.aliexpress.com/s/item/32381745233.html

15A high drain 18350 battery VAPPOWER IMR18350 3.7V 750mAh
https://m.aliexpress.com/s/item/32826504624.html

This one don’t have free shipping but gets really cheap when buying a few (postage doesn’t go up so much when adding more of them, less then double the postage when buying 12 of em Vs buying 1)

https://www.aliexpress.com/item/2pcs-14500-rechargeable-Genuine-hibatt-14500-battery-3-7v-700mah-high-drain-12A-for-e-cigarette/32381745233.html

These look like overpriced and overspecced TrustFire IMR14500/Windyfire IMR14500 class cells (Enercig TN14500HP/Enercig EC-14500HP also).

Nothing (good) to say with regards to the Vappower rewraps. :-)

Cheers

Can you test the new Nitecore NL1829LTP low temperature 18650 battery? Claimed to function down to –40C.

Will your test instruments fit inside a freezer? :wink:

It would be interesting to see Nitecore NL1829LTP review.

Hello HKJ,

I hope, you are still willing to review NiMH batteries, because I found an interesting new manufacturer :slight_smile:

https://www.aliexpress.com/item/8pcs-lot-Leise-AAA-1-2V-1000mAh-NI-MH-Rechargeable-Battery-aaa-Batteria-Rechargeable-NIMH-Batteries/32809653924.html

For this price, I would call them neither cheap, nor expensive.

I ordered one 8pcs set of these batteries, and I did a CDC test for capacity and IR with my Miboxer C2-4000 charger, which resulted the following: 1. 984mAh, 59mOhm; 2. 981mAh, 68mOhm; 3. 1004mAh, 56mOhm; 4. 963mAh, 66mOhm; 5. 973mAh, 73mOhm; 6. 970mAh, 55mOhm; 7. 982mAh, 57mOhm; 8. 960mAh, 57mOhm.

I think, these values are pretty good, when considering, the test was made just after opening the package, and found them at around 1.24V (I did no charge/discharge cycles prior to this test), AND, the discharge measurement was not on a minimal current, but the current the Miboxer C2-4000 offered for the test.

Also, I had a similar test run on these batteries:

https://www.aliexpress.com/item/Leise-8pcs-2a-AA-Battery-Batteries-1-2V-aa-2700mAh-Ni-MH-Rechargeable-Battery-8-Pack/32813456132.html

While my test results were somewhat short of the declared capacity, I think, they are also not bad: 1. 2318mAh, 47mOhm; 2. 2358mAh, 48mOhm; 3. 2357mAh, 47mOhm; 4. 2346mAh, 48mOhm; 5. 2348mAh, 48mOhm; 6. 2334mAh, 48mOhm; 7. 2355mAh, 46mOhm; 8. 2354mAh, 49mOhm.

After seeing these results, I ordered a small pile of these batteries, too (just a few days ago):

https://www.aliexpress.com/item/8pcs-Lot-Leise-High-Capacity-Series-AAA-NiMH-Rechargeable-Batteries-950mAh-Suitable-For-Remote-Control-Toys/32810198114.html?spm=a2g0s.9042311.0.0.V9ubQp

I have one low temperature LiIon battery in queue and am thinking about if I can do any test in the fridge/freezer. They will have to be manual with the equipment standing outside. This also means I will only be testing at one or two currents, maybe 1A and 3A would be fine?

I have ordered some Leise batteries.

Nitecore, as any rewrapper, can claim bullshit in their ads. Not really being disrespectful, I'd very much prefer the OEM datasheet though.

Cheers :-)

Is these 16340 worth checking out?
On the app I can see a review with pictures but on the browser page I can’t see any reviews.

Liter energy battery RCR 123 16340 780mAh 3.7V Li-ion Rechargeable Battery Lithium Batteries with Retail Package

Link: https://m.aliexpress.com/item/32833747694.html

Here's the full web link, EagleShield: https://www.aliexpress.com/item/Liter-energy-battery-RCR-123-16340-780mAh-3-7V-Li-ion-Rechargeable-Battery-Lithium-Batteries-with/32833747694.html

Review quote with Google translation and the pictures which matter to us:

• Аккумуляторы просто супер. Емкость чуть меньше заявленной, но они ещё должны раскачаться. Лучше не нашел. Упаковка просто супер: Пупырка + пластиковый бокс + пупырка + Картонная коробка Доставка очень быстрая: с момента заказа до получения - 14 дней. Продавец общительный, на вопросы отвечает.

• The batteries are just super. The capacity is slightly less than the claimed capacity, but they should still be swinging. I did not find it better. The packaging is just super: Puppy + plastic box + papyrka + Cardboard box Delivery is very fast: from the time of ordering to receiving - 14 days. The seller is outgoing, the questions are answered.

Cheers :-)

P.S.: these smell like TrustFire IMR16340 650mAh cells with a different wrap and a nice price.

I see now that the “2pcs li ion 14500 rechargeable Genuine 14500 battery 3.7v 700mah high drain 12A” looks exactly like the “Hibatt IMR14500 700mAh (Orange)” that you already have tested except that they have removed the Hibatt name.
It’s even sold by the same aliexpress store that you bought your Hibatt cells.

Edit: Just for info

A think a full test in room temperature + a 1-2 tests in a fridge would be great.

Fridge, Agro? HKJ lives in Denmark and by the time he gets the low temperature batteries he may already be seeing some nice sub-zero celsius temperatures on street thermometers. He'll just load some equipment on his van and that's about it. ;-)

Cheers ^:)

You mean like eneloops? :slight_smile:

My test equipment lives best at around 25C and living in an apartment I am not going to draw wires out a open window to test anything outside when it is cold. :smiley:
Fridge is the best solution, but I need to get some test equipment together (I will not take down any of my regular test stations, i…e I have to use some spare equipment).

Link: Charging at High and Low Temperatures

Alot of text but does this apply to high drain cells to?

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Low temp
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Li ion can be fast charged from 5°C to 45°C (41 to 113°F). Below 5°C, the charge current should be reduced, and no charging is permitted at freezing temperatures because of the reduced diffusion rates on the anode. During charge, the internal cell resistance causes a slight temperature rise that compensates for some of the cold. The internal resistance of all batteries rises when cold, prolonging charge times noticeably.

Many battery users are unaware that consumer-grade lithium-ion batteries cannot be charged below 0°C (32°F). Although the pack appears to be charging normally, plating of metallic lithium can occur on the anode during a sub-freezing charge. This is permanent and cannot be removed with cycling. Batteries with lithium plating are more vulnerable to failure if exposed to vibration or other stressful conditions. Advanced chargers (Cadex) prevent charging Li-ion below freezing.

Advancements are being made to charge Li-ion below freezing temperatures. Charging is indeed possible with most lithium-ion cells but only at very low currents. According to research papers, the allowable charge rate at –30°C (–22°F) is 0.02C. At this low current, the charge time would stretch to over 50 hours, a time that is deemed impractical. There are, however, specialty Li-ions that can charge down to –10°C (14°F) at a reduced rate.

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High temp
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Lithium-ion performs well at elevated temperatures but prolonged exposure to heat reduces longevity. Charging and discharging at elevated temperatures is subject to gas generation that might cause a cylindrical cell to vent and a pouch cell to swell. Many chargers prohibit charging above 50°C (122°F).

Some lithium-based packs are momentarily heated to high temperatures. This applies to batteries in surgical tools that are sterilized at 137°C (280°F) for up to 20 minutes as part of autoclaving. Oil and gas drilling as part of fracking also exposes the battery to high temperatures.
Capacity loss at elevated temperature is in direct relationship with state-of-charge (SoC). Figure 5 illustrates the effect of Li-cobalt (LiCoO2) that is first cycled at room temperature (RT) and then heated to 130°C (266°F) for 90 minutes and cycled at 20, 50 and 100 percent SoC. There is no noticeable capacity loss at room temperature. At 130°C with a 20 percent SoC, a slight capacity loss is visible over 10 cycles. This loss is higher with a 50 percent SoC and shows a devastating effect when cycled at full charge.

Discharging at High and Low Temperatures

I don’t like those numbers. Probably won’t hit the turbo as much now.
Or is it only when it discharge AND charge at those temperatures the cycle life drops?

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As all drivers in cold countries know, a warm battery cranks the car engine better than a cold one. Cold temperature increases the internal resistance and lowers the capacity. A battery that provides 100 percent capacity at 27°C (80°F) will typically deliver only 50 percent at –18°C (0°F). The momentary capacity-decrease differs with battery chemistry.

All batteries achieve optimum service life if used at 20°C (68°F) or slightly below. If, for example, a battery operates at 30°C (86°F) instead of a more moderate lower room temperature, the cycle life is reduced by 20 percent. At 40°C (104°F), the loss jumps to a whopping 40 percent, and if charged and discharged at 45°C (113°F), the cycle life is only half of what can be expected if used at 20°C (68°F). (See also BU-808: How to Prolong Lithium-based Batteries.)

The performance of all batteries drops drastically at low temperatures; however, the elevated internal resistance will cause some warming effect because of efficiency loss during use. At –20°C (–4°F) most batteries are at about 50 percent performance level. Although NiCd can go down to –40°C (–40°F), the permissible discharge is only 0.2C (5-hour rate). Specialty Li-ion can operate to a temperature of –40°C but only at a reduced discharge rate; charging at this temperature is out of the question. With lead acid there is the danger of the electrolyte freezing, which can crack the enclosure. Lead acid freezes quicker with a low charge when the specific gravity is more like water than when fully charged.

You will often see temperature specifications in my reviews (At least with Sony, LG, Samsung, Sanyo) and I doubt there is any charging specifications that goes below 0C (I have not checked and cannot remember all the batteries).

low temperature NiMH ?