Questions tagged [lead-acid]

A type of very common chemistry system used batteries using lead and sulfuric acid. fully charged it will have a voltage of 13.8 V. These batteries are used in automotive and robotics environments.

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58 views

Can Lead Acid and Lipo batteries be connected together to achieve higher resulting current?

I have a lead acid battery setup which has 3x12V 12Ah batteries connected in series resulting in 36V 12Ah output. I also have 3 LIPO batteries (1x11.1V 3300mAh, 1x11.1V 3000mAh and 1x12.6V 4500mAh). ...
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90 views

Question about lead acid batteries? [duplicate]

I am having two batteries of different specs (both, dry cell, UPS/inverter batteries) Battery A: 12 V, 26 Ah Battery B: 12 V, 7.2 Ah I need a 24 V output so I have connected them in series. My ...
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1answer
951 views

Lead acid battery internal short [closed]

In trying to revive an old lead acid battery I have drained the acid solution from the battery and am attempting to clean the plates with an Epsom salt solution however once drained there seems to be ...
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2answers
208 views

Can a 3 stage charged battery bank be used to quickly charge a drained battery bank?

I am considering this idea. For a 36V golf cart application, I want to be able to quickly charge it (but not to 100% State of Charge (SoC)). The idea is to give the 36V bank a strong boost in ...
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1answer
319 views

Lead Acid Battery Voltage rises very quickly

I am working on a charger for the first time. m charging a lead-acid battery (6V) by supplying a voltage of 7-7.2V & 100mA. But the voltage rises from 6.10 to 6.30 in just 5-10 seconds. What ...
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1answer
2k views

Can I Charge a 12V Battery While It's In Use? [closed]

I have a Time-Clock (Where employee's check-in and check-out to track working time). Currently set up like this: 12V Adapter >> Time Clock So whenever that 12V adapter loses power, the time clock ...
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1answer
176 views

Lead acid battery charging current dosent become zero

Here I am charging a 6V 4.5Ah lead acid battery by using a 8V-10V LM317 input supply for the circuit. I'm using the BD139 transistor to cut off and a 6.8V zener diode. As the battery voltage reaches ...
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1answer
388 views

Lead-Acid battery connections

In a lead-acid battery we have 6 cells, each cell having positive and negative terminal. The negative terminal of the first cell from the right of the picture connected to the positive terminal for ...
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2answers
1k views

Connecting lithium and lead-acid in series

I have a 48v 12Ah lithium battery pack, and I want to connect one or two lead-acid batteries of 12v 12Ah to it to make it 60v or 72v 12Ah. I can charge it with a 60v or 72v lithium charger. Will this ...
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1answer
96 views

How to charge this lead acid battery from child electric car? [closed]

I don't have the charger that comes with it. I tried hooking it up to cheap 9v 500mA router transformer or something like that. But when putting in multi meter in the middle in serial connection, I ...
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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 ...
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253 views

refilling 4v lead acid battery

in my case i have some 4v lead acid battery laying around.... and i have not used for a while so obviously they are dead or dried out.... i tried to search some way or result on how to refill it... ...
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1answer
1k views

12v lead acid to 5v USB using Car cigarette converter [closed]

I am trying to power up a Raspberry Pi outdoors. So I got a lead cell battery and a car cigarette lighter to USB converter (12v-to-5v step down converter). Unfortunately, before even connecting the ...
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1answer
757 views

How to protect a 12v lead acid battery from a short circuit?

Is there a board that protects lead acid batteries from a short circuit. The capacity of my battery is 4,7Ah. My circuit is consuming about 3 amps.