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Questions tagged [battery-chemistry]

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

8
votes
4answers
638 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
96 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 ...
-1
votes
0answers
30 views

Battery OCV measurement

I want to measure battery voltage using OCV (open circuit method) method. I want to make a look-up table, so, I have come up with a block diagram for OCV measurement at battery relaxed state. Will it ...
0
votes
1answer
82 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
476 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
56 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
21 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
74 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
67 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
36 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
55 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
91 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
234 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
134 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
468 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
131 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
124 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
0answers
69 views

Electronic load battery testing - Honda NiMH batteries - Energy storage

I recently found a way to recondition used cylindrical NiMH batteries pretty well (typically those used in the Honda Insight series). However, I want to know whether the batteries will hold ...
0
votes
1answer
110 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
47 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
69 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
314 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
696 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
184 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
46 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
154 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
37 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
63 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
115 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
284 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
71 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
177 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
60 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
835 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
34 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
27 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
172 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
122 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
114 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
101 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
79 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 ...
2
votes
2answers
125 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 ...
10
votes
3answers
4k 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
0answers
63 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
36 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 ...
9
votes
2answers
239 views

Can copper-zinc be substituted for silver-zinc?

Silver-zinc batteries are in the news (the pop science news) these days because they are being researched to compete with lithium ion batteries. But the price is high because silver is expensive. So ...
1
vote
2answers
530 views

Electrical neutrality between electrodes of galvanic cell: why is it necessary for current flow?

I know that as electrons move from anode to cathode through wire in a galvanic cell, there remains in the anode +ions (Zn for example) while - ions are created in the cathode. Afterwards a salt bridge ...
1
vote
3answers
140 views

Is there such thing as a 9V NiMH battery with 600 mAh?

I want to buy some NiMH batteries for a meter, the stocked NiMH that comes with the meter is 9V 300 mAh NiMH. Looking on eBay I found several NiMH batteries which appear to be 600 mAh, here is a link ...