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Questions tagged [battery-chemistry]

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

0
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1answer
42 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
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2answers
114 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 ...
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0answers
18 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
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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
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0answers
26 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
801 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
112 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
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1answer
121 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
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2answers
518 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
119 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
22 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
76 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
81 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
37 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
61 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
96 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
553 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
135 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
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0answers
1k 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
271 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
142 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
152 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
55 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
570 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
1k 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 ...
-1
votes
1answer
236 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
51 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
231 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
43 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
70 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
150 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
402 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
73 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
248 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
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0answers
61 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
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2answers
844 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
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0answers
37 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 ...
-8
votes
1answer
220 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
143 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
131 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 ...
-4
votes
2answers
107 views

how to design a circuit to measure in battery? [closed]

the main goal is to design an electric circuit with low energy
0
votes
0answers
98 views

Why are Nickel Iron batteries expensive, less manufactured and not researched much?

I have read about Nickel-Iron batteries and from what I have understood they have very long life and large cycles. They are heavier than lead-acid batteries, but even lead acid cells are used in ...
3
votes
2answers
140 views

What is an “Ni-Cr” battery?

I have encountered a few references to Ni-Cr batteries, such as a Charger for NiMH and Ni-Cr batteries. I think it may be a synonym for NiCd. If you can shed any light on this, it would be most ...
11
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3answers
6k views

Is it safe to discharge Li-Ion to 0V?

first of all: I know that a completely discharged battery is damaged permanently. I know it experiences irreversible chemical changes. I know it might blow up if you try to charge it. But that's not ...
1
vote
1answer
80 views

How much silver is needed in a silver-zinc battery, per kWh?

I'm trying to figure out how much silver is theoretically needed per kWh for a silver-zinc battery. From this data page, I gathered the following: \$Ag^+ + e^- ⇌ Ag (s) \hspace{6 cm} +0.7996\$ \$...
1
vote
1answer
41 views

How much energy do Li-Ions/Li-Pos have below 3.2V threshold?

How much energy does a battery still have when a protection chip disconnects it? I know that such discharging kills the battery, but in some cases it would be useful. For example, in drones: when you ...