Welcome. I plan to buy a battery charger for various types. I have read several topics such as: however, they mainly concern AA / AAA chargers. Initial searches lead to two models: - EverActive UC-4000 - - XTAR VP4 Plus DRAGON - Dragon is a bit more expensive (about PLN 300 on the allegro)...

For my part, I can recommend Joinrun S4. It supports what you need, you can check the capacity of the cell and its internal resistance. Unfortunately, you can only buy it from a Chinese. I bought on AliExpress as a promotion for about 70 PLN.

I have been using Opus BT-C3100 for a long time (over two years) and I am happy with it. It has everything you expect.

@ rafi84 Thanks for the suggestion. However, I would like to buy something in Poland. @ Peter G # From what I see this charger has no protection against inserting the battery the other way around. Maybe I can handle it somehow and mark batteries Do you know if the charger has overcharge protection for non-self-contained batteries? For example, Sanyo NCR18650GA.

Yes, this charger carefully controls the battery charging process, including temperature control.

I am also wondering what to choose OPUS BT-C3100 V2.2, LIITOCAL LII-500 or EverActive UC-4000

I will refresh the inquiry about the charger. 1. EverActive NC-3000 2. EverActive UC-4000 3. Opus BT-C3100 V2.2 / V1.1 4. Repair my Powerex MH-C9000 (broken chokes) 5. Different? Many of these chargers today. Charges mainly AA, AAA, R20, 18650 cells (but I have an additional one, so it is not required)

This and I will slightly refresh because after about 10 years of Xtar VC4 something is starting to fail. Mainly it's about charging AA, very occasionally 18650, testing cells. I know all of the following from the description and third-party opinions, which show that each meets my needs, they are within the budget of PLN 200. Has anyone used at least 2 of the following? Opus BT C3100 Vapcell S4 plus Newell Smart C4 Supra 4 Xtar VC4SL 4 charger

I've been using opus intensively for almost 8 years, recently ordered a Vapcell for my brother and I'm wondering if I should buy one for myself as well. Higher charging currents, more options, you can charge longer batteries (e.g. secured 21700 or 26800 do not fit in the opus). Of course, I'm comparing it to the version from 8 years ago, I don't know what the current one looks like.

I recommend Liitokala lii-600. The only drawback is that it does not charge the batteries to the appropriate level for storage.

I use liitokala lii 500 and it also works.

Best AA, AAA & Li-ion Chargers: EverActive UC-4000 vs XTAR VP4 Plus DRAGON for 18650 Batteries

ViP3R 7938 10

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Which charger should I buy for AA/AAA and unprotected 18650 Li-ion cells, and is the more expensive XTAR VP4 Plus Dragon worth it?

The thread does not show a clear reason to pay extra for the XTAR VP4 Plus Dragon; instead, users mainly recommend other multi-chemistry chargers such as the Opus BT-C3100, Joinrun S4, and Vapcell S4. The Opus BT-C3100 is reported as reliable for years and is said to carefully control charging, including temperature control, for non-self-contained cells like 18650s [#17405486][#17407003] The Joinrun S4 is praised for showing cell capacity and internal resistance, but it is mainly available from China [#17404494] The Vapcell S4 is described as offering higher charging currents, more options, and support for longer cells such as protected 21700/26800 that do not fit in the Opus [#20543381] Liitokala Lii-600 and Lii-500 also get positive mentions, though the Lii-600 reportedly does not charge batteries to the proper storage level [#20543425][#20564313]

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#1 17404449 25 Aug 2018 21:00

ViP3R ViP3R

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Post #1
17404449 25 Aug 2018 21:00

Welcome.
I plan to buy a battery charger for various types.
I have read several topics such as: https://www.elektroda.pl/rtvforum/topic3313594.html, however, they mainly concern AA / AAA chargers.
Initial searches lead to two models:
- EverActive UC-4000 - http://everactive.pl/ladowarka-everActive-UC-4000
- XTAR VP4 Plus DRAGON - https://www.bto.pl/produkt/60942/ladowarka-xtar-vp4-plus-dragon-18650
Dragon is a bit more expensive (about PLN 300 on the allegro) and I wonder if it is worth paying extra.
It is important that the charger charges the Li-ion 18650 cell without protection.
I would like to buy one charger instead of two ...
It seems to me that as new chargers for many battery models do not charge worse than older separate for AA / AAA and separate for Li-ion 18650.

Do any of you have these models and share your insights?
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#2 17404494 25 Aug 2018 21:19

rafi84 rafi84

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Post #2
17404494 25 Aug 2018 21:19

For my part, I can recommend Joinrun S4. It supports what you need, you can check the capacity of the cell and its internal resistance. Unfortunately, you can only buy it from a Chinese. I bought on AliExpress as a promotion for about 70 PLN.
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#3 17405486 26 Aug 2018 13:02

Piotrek#G Piotrek#G

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17405486 26 Aug 2018 13:02

I have been using Opus BT-C3100 for a long time (over two years) and I am happy with it. It has everything you expect.
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#4 17405715 26 Aug 2018 14:43

ViP3R ViP3R

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Post #4
17405715 26 Aug 2018 14:43

@ rafi84 Thanks for the suggestion. However, I would like to buy something in Poland.

@ Peter G # From what I see this charger has no protection against inserting the battery the other way around.
Maybe I can handle it somehow and mark batteries

Do you know if the charger has overcharge protection for non-self-contained batteries? For example, Sanyo NCR18650GA.
#5 17407003 27 Aug 2018 07:47

Piotrek#G Piotrek#G

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17407003 27 Aug 2018 07:47

ViP3R wrote:
Do you know if the charger has overcharge protection for non-self-contained batteries?

Yes, this charger carefully controls the battery charging process, including temperature control.
#6 17449024 19 Sep 2018 14:52

elektronik999 elektronik999

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17449024 19 Sep 2018 14:52

I am also wondering what to choose OPUS BT-C3100 V2.2, LIITOCAL LII-500 or EverActive UC-4000
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#7 18729770 31 May 2020 13:06

mikul22 mikul22

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Post #7
18729770 31 May 2020 13:06

I will refresh the inquiry about the charger.
1. EverActive NC-3000
2. EverActive UC-4000
3. Opus BT-C3100 V2.2 / V1.1
4. Repair my Powerex MH-C9000 (broken chokes)
5. Different?

Many of these chargers today. Charges mainly AA, AAA, R20, 18650 cells (but I have an additional one, so it is not required)
Comparing AA and 18650 charger options
#8 20542321 16 Apr 2023 14:14

kokosz1981 kokosz1981

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Comparing AA and 18650 charger options
Post #8 20542321 16 Apr 2023 14:14

This and I will slightly refresh because after about 10 years of Xtar VC4 something is starting to fail.

Mainly it's about charging AA, very occasionally 18650, testing cells.

I know all of the following from the description and third-party opinions, which show that each meets my needs, they are within the budget of PLN 200. Has anyone used at least 2 of the following?

Opus BT C3100
Vapcell S4 plus
Newell Smart C4 Supra 4
Xtar VC4SL 4 charger
Vapcell offers higher current and longer cell support
#9 20543381 17 Apr 2023 06:13

Piotrek#G Piotrek#G

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Vapcell offers higher current and longer cell support
Post #9 20543381 17 Apr 2023 06:13

I've been using opus intensively for almost 8 years, recently ordered a Vapcell for my brother and I'm wondering if I should buy one for myself as well. Higher charging currents, more options, you can charge longer batteries (e.g. secured 21700 or 26800 do not fit in the opus). Of course, I'm comparing it to the version from 8 years ago, I don't know what the current one looks like.
#10 20543425 17 Apr 2023 07:39

maurycy123 maurycy123

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Post #10
20543425 17 Apr 2023 07:39

I recommend Liitokala lii-600. The only drawback is that it does not charge the batteries to the appropriate level for storage.
#11 20564313 03 May 2023 08:16

son78 son78

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Post #11
20564313 03 May 2023 08:16

I use liitokala lii 500 and it also works.
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Topic summary

The discussion revolves around selecting a versatile battery charger capable of charging AA, AAA, and Li-ion 18650 batteries. The user is considering two models: EverActive UC-4000 and XTAR VP4 Plus DRAGON, with a preference for a single charger solution. Various users recommend alternatives such as Joinrun S4, Opus BT-C3100, and Liitokala LII-500, highlighting features like capacity checking, temperature control, and compatibility with different battery types. Concerns about safety features, such as reverse polarity protection and overcharge protection, are also raised. The conversation reflects a desire for a reliable charger that meets diverse charging needs without compromising on safety.
AI summary based on the discussion. May contain errors.

Best AA, AAA & Li-ion Chargers: EverActive UC-4000 vs XTAR VP4 Plus DRAGON for 18650 Batteries

Which charger should I buy for AA/AAA and unprotected 18650 Li-ion cells, and is the more expensive XTAR VP4 Plus Dragon worth it?

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Topic summary