The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [battery-chemistry]

The tag has no usage guidance, but it has a tag wiki.

Filter by
Sorted by
Tagged with
-1
votes
0answers
43 views

LiPo vs NiMh time to failure [duplicate]

If I have (numbers for NiMh are estimates not exact values): LiPo 12.8V, 19.2Ah, and 245.8Whr NiMh 12V, 30Ah, and 360Whr (Freedom DF300 Stationary Battery has a capacity of 30Ah for discharge in ...
1
vote
1answer
89 views

Are lithium ion batteries damaged by strong magnets?

I'm wondering if it is okay to put a lithium ion battery directly next to a strong permanent magnet. Would this affect the functioning of the battery? Can it lead to early failure? In the worst ...
3
votes
0answers
55 views

How does the charging curve of a deep-cycle lead-acid battery change as it degrades?

I am designing a circuit inside a UPS that periodically tests how long the battery can power the load. It does this by breifly disconnecting the power from the UPS and extrapolating from the measured ...
1
vote
2answers
149 views

Do Duracell AAA batteries have internal short circuit detection?

I was shorting a Duracell AAA battery in a SAFE area with proper precautions. After 2 minutes I disconnected the circuit and measured the voltage, it dropped from 2.8V to 2.6V and the battery was hot. ...
0
votes
3answers
40 views

How can you visually model voltage vs. current?

I'm trying to wrap my head around Voltage and Current. I saw this analogy on a post from another site that seems to make sense: For circuits I tend to mentally use a "plumbing" analogy. The voltage ...
0
votes
2answers
162 views

Lithium ion (Li-ion) vs. Lithium thionyl chloride (LTC) battery?

I need some consultation on which battery of the two to use for the GPS trackers I'm designing. My trackers wakeup when there's movement only so they're not on all the time and they have low power ...
0
votes
1answer
51 views

200AH lead acid battery

I have a 12V 200AH lead acid battery and I want my load be a power resistor and a bulb. Does the batter draw current based on the load resistance? so meaning the current that will be drawn in this ...
1
vote
2answers
145 views

Battery operation, charge and discharge processes misconceptions

I'm trying to elaborate a simple explanation (and conceptually correct) of how a battery charges and discharges, and why we say things like "the charge stored in the battery is x Ah". For now, I have ...
0
votes
0answers
23 views

Li-ion cell voltage balancing issue while charging

I have a two cell li-ion battery which has specifications of 7.4v, 2200mAH. I used one cell (3.7v, 2200mAH) for a required project. I discharged it and then reconfigured in to series(7.4v, 2200mAH) ...
0
votes
1answer
51 views

Jumpbox battery [closed]

First time on this site just signed up hopefully I get the answer I'm looking for. I'm working with a Coleman Powermate emergency jump-start box. The battery that was in it is a rechargeable sealed ...
0
votes
0answers
35 views

Conflicting information on Qualcomm quick-charge 3.0 standard

Out of many fast charging protocols, Qualcomm quick-charge 1.0/2.0/3.0/4.0/4+ is a prominent one. I tried to find the specification of quick-charge 3.0 protocol. However, the material spread across ...
9
votes
4answers
972 views

Allowable reverse current into Alkaline battery

Anyone know what happens to alkaline battery if a small current pumped in? For example 0.5uA into a 9V battery alkaline? I want to add a simple 9V battery + rectifier as backup voltage to a 12v ...
2
votes
1answer
125 views

Why are(n't) rechargeable batteries damaged by partial charging?

Over the years, I've come across websites and people with different opinions on the "correct" way to charge rechargeable batteries (I'm more concerned with laptop, tablet and phone batteries than with ...
0
votes
1answer
198 views

Battery advice re cooking equipment

Please go gentle as I am a novice at electronics/battery issues. I am hoping someone with a much bigger brain than me can answer this question... Is it realistically possible to power a 1200W ...
4
votes
2answers
558 views

Is Non-Passive Cooling bad for Lithium Ion Cells?

I'm in the process of designing a device capable of charging, discharging and testing internal resistance of 18650 cells. My device will be capable of testing 100x 18650 at the same time, each will ...
1
vote
1answer
194 views

Is it safe to charge single 18650 cells without temperature sensing?

I was looking at 'power bank' circuit boards on Aliexpress, the kind that you add to a 18650 cell to make a basic 5V in/out supply. I noticed they all seemed to be lacking any kind of temperature ...
2
votes
0answers
26 views

Deep Discharge of Cells and Batteries

This is a question related to What makes primary batteries leak on very deep discharge? What are the dangers of deep discharging a cell or battery? I've seen a LiPo battery getting puffy most likely ...
2
votes
1answer
81 views

What are different battery capacity algorithms used? [closed]

I need to implement an algorithm to know the capacity of a battery. I don't want to use any external gauges which are available on the market. Can you suggest which algorithm(s) is/are popular? Can ...
1
vote
1answer
116 views

How to calculate capacity of a battery from the readings of current and time?

The requirement is to compute the capacity of the battery in order to calculate the capacity degradation. The input which can be acquired are current, voltage, relative time, battery level (in terms ...
0
votes
1answer
43 views

I am working on choosing an ideal anode for salt water battery. [closed]

Can anyone tell me how to justify this anode is the best compared to other? ALso, why the discharge capacity decrease with C rate? what does cyclability and rate capability means?
0
votes
1answer
65 views

Do full charges and deep discharges wear the battery because of terminal voltage?

A mobile phone battery charged to indicated 100%, which is not being charged at the moment, might have the same terminal voltage as if it is being charged at 2A while being at an indicated capacity of ...
0
votes
3answers
136 views

How to identify, if possible, a battery [closed]

I have these two batteries, 18350 form factor, without any label. As far as I know they are rechargeable because I've salvaged them and put in my salvaged "li-ion to be cecked" box. Now I've ...
0
votes
2answers
858 views

9V Battery VS 6xAA Batteries

I've been following this tutorial on Arduino's, for the one's that are interested it's this one (https://www.youtube.com/watch?v=5bHPKU4ybHY&t=575s) Yesterday I was struggling to get a servo ...
-2
votes
1answer
136 views

Why do lead-acid batteries only last for a few years? [closed]

Why do lead-acid (automotive-style) batteries typically only last for a few years of regular use (or x amount of cycles) before having problems? Obviously, things can't last forever. But, what are ...
0
votes
0answers
2k views

Difference between Tubular and Tall Tubular Inverter Batteries

What is a difference between Tubular and Tall Tubular Inverter Batteries with same configuartions? Why are Tall Tubular batteries are priced high than Tubular Batteries? Tall battery have warranty ...
0
votes
1answer
870 views

battery 'sizzling' noise

car battery making a noise similar to light buzzing ( shorting?) battery just over a year old. car just back from being driven. earth lead removed .noise still there. best described as 'sizzling' ...
0
votes
4answers
178 views

What is the recommended battery chemistry for digital multimeters?

I would like to know if the different internal resistances of different battery chemistry somehow affects the calibration of a digital multi-meter. If so, then what would the optimal battery ...
0
votes
1answer
170 views

18650 cells - Unable to measure capacity

I got many 18650 batteries from notebook batteries and I want to test their capacity by my Turnigy Accucell 8. My problem is, that when I start discharge program (0.5A what is from battery datasheet) ...
2
votes
1answer
60 views

Is the carbon-zinc battery that I am characterising overloaded? Using HPPC

I am trying to characterise a 9 V battery using a pulsed load measurement. The battery is a 9 V zinc-carbon eveready super heavy duty. The load is a controllable constant current source. When I ...
0
votes
1answer
70 views

How much current should I pass through battery to break through sulphate deposits?

I recovered an aged SLA from the pile dated 2003 marked 6V 4.5AH. It has .97V in it. As I recollect, thumb rule for a charging current would be about 500mA at 7V or better. A breadboarded LM317 may ...
4
votes
1answer
860 views

TP4056 heating very badly

I’m charging a Li-ion 3.7 V, 3500 mAh using a TP4056 charge controller IC and feeding a 6 V, 9 W monocrystalline solar panel to charge it. When I connect the solar panel at good sun light at 2 PM in ...
-2
votes
1answer
2k views

Replacement of li po battery with li ion battery [duplicate]

Is it possible to replace a battery for headphones? I would like to replace a 052030 li po battery with a Nokia BL-5C Lithium Ion battery. The li po battery is rated at 130 mAh with 3.7v. The Lithium ...
0
votes
1answer
274 views

Could I replace headphones NIMH battery with Lithium Ion phone battery of the same voltage?

Is it possible to replace a battery for headphones? I would like to replace a 052030 li po battery with a Nokia BL-5C Lithium Ion battery. The li po battery is rated at 130 mAh with 3.7v. The Lithium ...
0
votes
1answer
59 views

Understanding Battery discharge rating

Please find the attached image showing amaron quanta 12 V 100 Ah VRLA battery discharge chart at constant current rating. I am bit confused that how should I calculate the battery capacity based on ...
0
votes
1answer
321 views

What is the actual capacity & charging current of a given deep cycle lead acid battery?

Firstly let me say that this is with a view to using a lead acid battery for backup purposes in case of power outage (mains power, a few lightbulbs but with daily outages lasting a few hours) So let'...
2
votes
1answer
52 views

What causes ions inside of a lithium ion battery to move between the cathode and the anode?

I understand that inside of a lithium ion battery, the ions move from the anode to the cathode internally during discharge in order to attract the electrons to move from the anode, through the wires, ...
1
vote
1answer
73 views

Does any of those internet tips to recondition Li-ion batteries actually work?

If you google "fix liion battery" of similar, you'll get the following tips on various sites: Fully discharge and charge battery - this sounds like completely bad advice since discharging Li-ion ...
0
votes
4answers
171 views

How is it possible a dead old Lithium battery becomes charged after opened?

I opened a lithuim battery salvaged from my old laptop battery pack. I checked million times that it is 0V and it was by the time i was opening it. For some reason i would love to know, it is now ...
1
vote
1answer
505 views

Running GSM module from primary batteries (ER34615)

I'm designing a small telemetry system that will take measurements every few hours and send the data through 3G at the end of the day. The target battery life is 1 year. The GSM modules is an XBee 3G....
0
votes
0answers
75 views

What happened to my Ni-MH battery?

I made a little custom data logger. It's powered by a rechargeable AA Ni-MH battery. Typically, it lasts about 2 weeks on one battery. Then it uses a low voltage cutoff to sound a low battery alert,...
1
vote
1answer
304 views

How can I calculate Ampere Per Hour if Intensity has been given

Today I had an exam on Technology, and there was a question: If a nano robot has a battery of 2.15Ah(Amper per hour) , how much it will last without recharching , if the robot spends 1.8I(Ampere) ...
0
votes
0answers
63 views

Why can batteries store much more energy than capacitors even though they are much smaller? [duplicate]

Why are batteries significantly smaller than capacitors yet can store much more energy ?
6
votes
2answers
870 views

Batteries in Series

i have 39 batteries of 33Ah 12V connected in series, i need to add 3 more batteries. may i add 3 more batteries of 40Ah 12V in same series? what will happen technically? kindly advise.
1
vote
0answers
39 views

Any deleterious effect from very strong, close magnets on NiMH cells over time?

This question probably isn't a perfect fit for this SE, but I did find this question: Will placing a strong magnet near my electric skateboard Li-Ion Battery pack damage or discharge it? This is a ...
0
votes
1answer
28 views

Does the charge of a battery affect its discharge voltage or current?

Although I am making an electrochemical battery (1 lead acid cell), I thought that this question would be more suitable here. Would there be any difference in the voltage and current of the cell (when ...
-7
votes
1answer
286 views

Charging balance with 2 batteries: How is kitchen aluminium foil dangerous despite same voltages? [closed]

If 2 batteries of the same kind are connected to each other, the battery with more charge, thus higher voltage, will charge the one with less capacity. A standard NiMH battery charger uses 1.3V to 1....
18
votes
4answers
4k views

Is temperature the only battery charging speed limitation?

Charging too quickly can cause the battery to blow up due to heat. But what if I cool the battery down? Can I charge as fast as I want, provided that I cool it down sufficiently? Can I enforce ...
0
votes
0answers
44 views

Batteries have spare capacity when unused for minutes after running out? [duplicate]

I tested it with NiZN batteries: After they ran out of power, I measured their voltage. 0.9V. I waited 15 minutes, measured again without charging, and it was at 1.5V. I continued operating a CD ...
2
votes
2answers
154 views

Why are lithium-ion batteries typically used if they’re so flammable?

It’s no secret that lithium-ion batteries are volatile - just look at hoverboards, Samsung Galaxy Note 7’s, and even some iPhone models which have exploded. Granted that these are not so common ...
0
votes
1answer
146 views

Primary cell chemistry with the highest volumetric power density

I am working on a project (a disposible device) which requires significant power delivery from a small volume. This power delivery is very bursty, we're talking a handful of big pulses over the ...