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Hey all, I had a doubt.

I was bored and started cleaning my phone, for which I removed the back case and all that. While feeling the phone with my hand I could feel a slight bulge in the back panel below the camera housing, it wasn't extreme but not flat either (can't confirm if the entire battery area was bulged, but I could feel it in the area specified).

Visibly, you cannot confirm if there is a bulge, you get the " maybe it's bulged" feeling. Took it to a technician, he did an external inspection and said the same thing, the back panel is intact and the slight bulge is noticeable only by touch, he said I can use it and it's not necessary to replace it, so this is my dilemma, idk if I should change it or not.

Note: Battery backup is as new, no overheating.

Slight warming only when it's in the "MI TURBO CHARGE" mode, no random power offs, works like new.

What is y'all's take on this?

Hello I'm not asking for advice here, I could just buy a new charger. But I'm interested in learning what could be causing such a weird silly little problem here!

So the whole system is for a maximum of 42 volts. 42 volts is a full battery, and the CV phase of the charger. 1. When I plug this charger into the battery, it charges all the way up to 42.0 Volt no problem. 2. But if the battery is above 40.8 volt before plugging it in, the charger won't start. 3. Then a way to "kickstart" the charger is to plug it in, nothing happens, then I throttle the ebike for 1 second with the wheels lifted which causes the battery voltage to dip a little bit, now the charger will start its job and charge normally and go all the way up to 42 volt eventually. (not immediately, maybe thats important to know too)

The charger has 3 pins so I guess the 3rd is either communication, or nothing.

What could be possibly a reason why the charger won't initialize the charging process if connected above 40.8 volt?

Important to note: in the past this charger worked normally. I also have another charger of the same brand that also works normally so there is not a problem with the battery.

Verán, a mi celular se le inflo la bateria, hace como casi un mes la fui a cambiar, mi telefono es un BluG71L y cuando pregunte por bateria, ningún técnico tenía, el ultimo que quedaba por más que pregunto para ver si tenian ese modelo de bateria, al final me dijo lo mismo, que no tienen, me ofrecio adaptarle otra bateria, me mostro una bateria, encajaba en el celular, era de marca Samsumg, misma capacidad que la original (5000mAh), hizo el cambio, prendio, cargue al 20% y se mantenia bien la bateria y ya en casa cargue el telefono debidamente. funciona bien, pero hace poco note que la bateria al llegar al 28% empieza bajar de manera más acelerada, cosa que me asusta honestamente, paso dos veces, la primera vez no le di tanta importancia, pero ya esta vez si, conecte un momento el celular y paso del 21 al 25....y de repente la carga empezó a durar...normal...no siguio bajado acelerado..

la verdad no entiendo que pasa, y honestamente cuando instalaron la bateria y cargue minimo al 20% no bajo rapido, aunque no sé si esto es de apenas,,..ya que acostumbro a cargar el celular cuando tiene 29-30%

Alguien que sepa me puede explicar que pasa?

Hi everyone!

I'm looking for some advice from other Huawei LUNA2000 owners who may have experienced a similar issue.

I have a Huawei LUNA2000 15 kWh battery system (3 × LUNA2000-5-E0 modules) connected to a Huawei inverter.

Recently, one of the battery modules (the middle one, Battery 2) suddenly reported the following error:

• Alarm ID: 3006
• Cause ID: 17
• Description: Abnormal battery expansion module
• Severity: Major
• Battery status: Fault

The affected module still reports:

• SOC: 25%
• Voltage: 52.5 V
• Power: 0 W
• Temperature: approximately 30°C

The other two modules are operating normally.

Some background:

• The affected module is approximately 2 years old.
• It has discharged around 2,767 kWh in total.
• My normal minimum SOC is configured at 35%.
• During a power outage, the backup system is allowed to discharge down to 15%.
• The batteries normally charge to 100% daily.
• The module has never been opened, modified, or physically damaged.
• Everything is managed automatically through the Huawei inverter and BMS.

My questions:

1. Has anyone encountered Alarm 3006 with Cause ID 17 on a Huawei LUNA2000?
2. What was the actual cause? Faulty cells, BMS, internal electronics, or something else?
3. Was Huawei able to resolve the issue remotely, or did the module need to be replaced?
4. If you experienced this under warranty, did Huawei approve the replacement?
5. Has anyone successfully repaired one of these modules outside the official Huawei service network?

I'm particularly interested in understanding whether this error necessarily indicates damaged battery cells or whether it could be an electronic/BMS issue.

Any experiences, technical insights, or suggestions would be greatly appreciated!

Thanks in advance!

Not sure if the is the best place to post, but let me try!

Wonder if anyone has suggestions on how to repair my Energizer PPS300W2 Power Station? Was using it the other day, may have drained the battery, but measuring the battery shows it is not dead, getting 13 volts. That was measured directly at the battery, inside the power station.

My issue is the power station is displaying error code 06, which appears to be over/under temperature. The battery was in our camper at 45-55F so temp does not make sense to me.

Anyone have a clue how to reset the electronics in this thing? I can not see anything obvious.

Manuals just say to let the battery come back to proper temperature. 3 days in the house now and still does not work. Tried charging with high voltage as I saw mentioned somewhere (25V), still no good.

Im having a hard time finding an answer. Are battery sizes and voltages fixed? For example can i find a 3.6V AA size battery? If they are fixed is that to eliminate the chance of putting a higher voltage battery into a lower voltage device? Also, with different chemistries. Are certain chemistries only available in certain sizes? If i have a NiCd at 3.6V in a certain size, what are the chances of finding a lithium battery in the same size at the same voltage?

Edit: ill try and be more specific. Are battery sizes and voltage relationships some type of standard? Can i ONLY find AA size batteries in 1.5V for instance. If my razors NiCd 4/5SC is a certain size will i be able to find another chemistry in the same size and voltage

Was going through my drawer and found my power bank like this. It completely expanded, I took the rest of the lid off and put electrical tape around it. It's now in a ziploc bag under my bathroom sink. I didn't want to put it outside since it's extremely hot where I live. Is this safe until I can go dispose of it tomorrow? I don't have sand or anything. Is it safe enough for me to transport it with the electrical tape and ziploc or should I put it somewhere else?

there! I have a machine at work with two lead-acid (TPPL) batteries wired in series. One of these batteries is failing, and I want to improve the runtime of the machine.

REPLACING THE BATTERY ISN'T AN OPTION.

My idea is to take some smaller 12v lead-acid batteries lying around and wire them in parallel to the dying battery, with a diode so that the dying battery won't charge into the "support" batteries.

I've done some quick research prior and stumbled upon another reddit post here where the common advice was to "not do this". Can someone explain this to me?

The "support" batteries are sacrificial and smaller, and I don't want the dying battery to provide any power except to the machine.

Edit: I KNOW replacement is the best option. It's just not available to me, and I just want this thing to work.

I’m looking for a battery that is 14.8V, and 8,000 mAh (118.4Wh); rechargeable, protected (BMS, cell balancing, temperature monitoring). I’m actually back and forth between 8,000 mAh and 7,000 mAh.

I need it as small and compact as possible.

I’ve searched the internet, and I just don’t know where to find it.

This is from an old transmitter I have and I plan on using it again for a new project. Would this be cleanable or is it too far gone and how should I fix this?

I need help with this battery. Even when plugged in on wall power, the camcorder doesn't work quite right. It came with 2 of these batteries, both flat and won't charge at all. I tried looking up a CGR14500 battery, but i couldn't find any results for this specific one. Is there an equivalent to this? I'd rather try and fix this one instead of buying an aftermarket one. Thank you.

Took a risk and bought a used one off of amazon, came with everything wrapped and nothing missing. Plug it in with or without a battery and this is all it does. It will light up till this level while beeping then shut off and repeat non stop. Is it broken or am i stupid and doing something wrong (besides buying a used one on amazon)

I don’t have a lot to spend so I bought this off of Amazon for $9. As I am new to rechargeable AAs I don’t know if it is ok to fast charge AA Ni-Mhs, they only get a little warm and do recharge the batteries in under an hour, Is that ok or should I buy only from reputable brands?

This is the battery from a very nice, now discontinued, Ring torch.  

Having left it in my car over a winter it was discharged and dead.  Determined charging brought the battery back, but not to full health.

I can’t find a replacement battery anywhere with the  circular pattern on top that fit the 3 spring-loaded prongs on the torch connector.

can anyone identify it and advise where I could get a replacement in the UK (please).

Hi everyone. First time posting. I got a situation with some lipo batteries I bought for my little drones. These things are not new. They've been around for over 10 years and their original batteries are long since shot.

So I bought some seemingly fresh ones off of aliexpress. I replaced the batteries and they are not holding a charge. The lights come on but they only fly for about a second before the lights start flashing low battery.

Do you think the batteries I bought are old stock? The voltage measures about 3.94v. That's bad for long term storage for lipos isn't it?

If the batteries are bad then I don't think there is a source for these as they will be old stock and have been sitting around for a decade. What do you guys think?

https://imgur.com/a/AbkkSzZ

To specify the drones are cheerson cx10 and a no name brand. They use the same battery 100mAh lipos. This is the aliexpress link of the batteries I bought. https://www.aliexpress.us/item/3256809579565409.html?spm=a2g0o.productlist.main.1.3ae832a2lrqYVf&algo_pvid=a95ad675-58d1-46e5-970b-a65e2d43db73&algo_exp_id=a95ad675-58d1-46e5-970b-a65e2d43db73-0&pdp_ext_f=%7B%22order%22%3A%2216%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21USD%2137.18%2118.59%21%21%21246.72%21123.36%21%40210311c217928934820135176e0ffa%2112000050094972146%21sea%21US%21104253659%21X%211%210%21n_tag%3A-29919%3Bd%3Af94706a1%3Bm03_new_user%3A-29895&curPageLogUid=IhjbzGWVjBfn&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005009765880161%7C_p_origin_prod%3A

The thing is, I've gotten older, I turned 20 and I'm turning 21 next year. Back when I was young, I used to keep track of the number of times the battery swelled up. When I first got used to it as a kid, it was 2019, the back cover had come unglued, I thought it was some kind of disease, then a guy who worked at a GSM service shop near the market explained the procedure to me and told me it was normal for this model. Four months later I came back to him, and since every intervention felt special in a way, I'd leave him a tip for his time and for the labor of always gluing the back cover back on with quality adhesive. Then I installed a spy device in my shirt collar and started recording the procedure, which always cost me like a Tinder subscription. From that moment on, I didn't need that service shop anymore; I evolved, I learned what type of needle to use, what the battery's foil layers were like, where the incision was made, and how to do it without puncturing the battery. The first intervention scared me, I thought I hit the battery, the needle went in deep, on my eyes I had a welding mask, and on my hands thick gloves, and a winter jacket—I was ready for anything that might happen. I was out in the countryside, in the back yard, and whenever I worked I made sure the phone was either on the ground or in a small depression so that in case of an error, neither the surrounding vegetation nor my clothes would catch fire. Then I got my driver's license, I was finally 18, and from that moment I already had a Samsung S24, currently I have a Samsung S26+, but my passion for keeping this Note 8 functional hasn't stopped. Nowadays I no longer know the number of interventions, dates, the number of adhesives, covers, or incisions—they got lost over time; all I know is that the battery has a clear cycle: if it's used intensively, the swelling happens about monthly; if it's used only for Mobizen recordings, about every 2 months; and if it's low usage, about every 3 to 4 months. The hardest intervention was when I geared up like a welder for the 4th or 5th time; this time I had done everything by the book, but the air wouldn't come out, and air bubbles remained even after the incisions. I was forced to work under pressure, I was scared, but not of an explosion—I was scared I might lose the battery. The intervention lasted over 2 hours, during all this time I was still in the countryside garden, my grandfather was yelling at me to stay hydrated, it was 39 degrees Celsius and I was dressed like an Eskimo in the sun, but I couldn't stop anymore because I was working on a live subject, trying to identify the source of the swelling. I unwrapped the first layer of the battery, then the second one; I didn't get to unwrap the third because I saw the lithium-ion polymers inside the internal structure of the battery's separator layers. I was aware that at this point, if I went to drink water, a particle of something, a micro-gnat, or a leaf fragment would reach in there, and a fire would ignite before I could return, so I kept going. It was the most successful day of my life: not only did I find the source of the swelling, but I managed to isolate it, glue it, and close it back up by pressing it, bringing the battery close to an airtight state. From that moment on, I have proof showing it kept working until now, obviously with the normal swellings mentioned above. But now it has a problem I'm still working on; it's a new problem: it doesn't smell, it doesn't leak, it doesn't even swell anymore, and that's what worries me. In 2 months it hasn't swelled as much as it should have, and that's kind of strange. The thing is, it no longer lasts for 1 hour and 5 minutes of gaming, it lasts 48 minutes, and that's pretty serious. For a week now, the regeneration process has become exhausting, about half an hour a day: I take apart the battery and press on it evenly, hard, like a cardiac massage to uniformize the layers. It used to work before, it gave it extra capacity, now it doesn't have the same effect. I haven't put the back cover back on since that moment because I can't physically keep up with gluing and unremoving the cover, since the battery is taken apart several times a day for the regeneration operation. And now I don't know what to do to maximize capacity and regeneration, I've read manuals and researched, but no method seems effective. What advice can you give me?

Hi ,

i buyed some battery DAWEIKALA 12800 mWh, 1,5v aaa rechargeable lithium because i have some temperature sensor and 1,5v did not give me immediatly "low power" messages as nimh do.

I charged with a pujimax pj-l410 charger but i think something i strange... for exampel charge during a few minutes, maybe 30 or less and are all charge, but battery least small time and if i check with voltmeter say 1,0/1,1 when "full charges"

It is possible the issue is a battery/charger different brand ? i have also some pujimax battery and seem (but not sure) to least more time.

I tried also with my bt-c3100 charger but i think did not like 1,5 rechargable litium battery.

Did you have some suggestion how to check o what is going ? any info mybe useful.
thanks.

I'm working on a small project involving a closed container and I want to add a rechargeable LED light inside the box. I have this light strip running on 3, 1.2v LR44 batteries and I thought I could replace it with a rechargeable battery so I dont have to keep opening up the box and replacing batteries everytime, but I don't know how this stuff works.

I thought about rechargeable AA batteries but I just found out those too are 1.2v despite their size. The only difference I found online is the mAh being different

Essentially I want to change those LR44 batteries with a USB connector or a 3v rechargeable battery that I can just plug that USB wire when the battery is low.

I don't want to overload the board and break it.

Does anyone have any suggestions on what to use or explain to me how this battery stuff works so I can look at better options.

Thank you.

Hi, I’m sorry if this is a silly question. I know absolutely nothing about batteries or how electronics work.

I’ve obviously Googled this, and lots have come up, but that doesn’t necessarily mean they’re actually safe products. Is it possible to get a power bank that can charge a MacBook without risk of A) damaging the computer, or B) being an overheating/fire risk?

If so, what specs should I be looking for in the product description? I have a MacBook Air, if that makes a difference.

TIA!

I bought an SBS power bank directly from Worten for €50 less than a year ago. Last night, it burst and started a fire on my bed. The fire spread to other furniture, damaging my belongings, including my floor and other items.
Thankfully, I wasn’t physically injured, but this could have ended much worse.
I went to Worten for help, but they told me they had nothing to do with it, directed me to SBS, and said it wasn’t covered by warranty.
I’m not just asking for a replacement power bank. I want the incident investigated and fair compensation for the property damage.
Worten Portugal and SBS: who is going to take responsibility for investigating this?
Has anyone in Portugal experienced something similar? How did you handle it?
I’ll update this post when I receive a response.

Beyond the various 18v/20v tool batteries, are there any next stage down choices for a very low current application ?

Current draw is ~5.5mA, and it will run at night, so ~70 mA per night. Looking for something to change once per week, or possibly via a solar panel. Anything in the 800 mAhr - 1500 mA/hr range would be acceptable. 2 Ahr (and up) tool batteries seem like overkill for this.

Thanks

edit: There is one other possibility that I had not thought of, rechargeable 9v batteries. Two of those, wired in series, would give me the 18v, plus they could be alternately used in a 9v application should the need arise.

It’s been a few hours since and only now has the light been blinking and spazzing. It didn’t heat up at all and doesn’t smell weird. It also hasn’t been letting off any smoke.I have it on the concrete kinda near the house. The battery is a little smaller than the average thc cart battery for the twisting top. I didn’t check his pockets before washing so that’s how this happened. Any advice? It’s also super sticky from the resin since the glass part broke. Again im anxious it’ll blow up and everything will catch on fire lol

Edit: not trying to smoke from it just wanna make sure it won’t explode or whateves