HOW TO RECOVER 100% - AGM BATTERY

[@freechagosislandjohnpilger]

you just saved me hundreds of $$$, ,good stuff

[@Sino1985]

Till which Volltage did you discarge?

[@DIYDime]

11.5V

[@HienPham-tl5zh]

What tester did you use?

[@DIYDime]

In the description.

[@מדינט]

And I am watching this a week after I replaced my original battery with a Bosh AGM, which I hope to last even half of what the original one lasted (6 year).

[@TheDIYWorkshop2020]

Does this work on the long run? Any update after 6 months?

[@DIYDime]

Yes it does, still using it.

Will a noco 5 charger do the trick instead of the power source?

[@DIYDime]

If it’s 2 am - yes. I believe yours have 5A lowest

[@bradanesi3998]

How do you know how much water to add? I've added about 50ml to each cell, but the top of the "plates" are still dry. I realize it's different with an AGM and they should not be fully flooded.

[@DIYDime]

Try to charge now and after charging, test the battery. The goal is to get results, not to flood the cell. If no change in battery- repeat the process.

[@bradanesi3998]

@@DIYDime Thanks for the input. It charges, but drops down to ~12.2 within a few hours once off the charger. A lot of heat was generated, so thinking I'll repeat.

[@DIYDime]

@@bradanesi3998Make sure you charge the battery with low amps. If you have infrared meter you can check each sell to see if they perform same temperature. If one of them will give high temp then the other one it could be shorted.

[@seemaab]

@@DIYDimehigh voltage and low amps?

[@seemaab]

@@DIYDimealso you only Charged it and discharged it once?

[@Mckaule]

My friend opened AGM battery and filled distilled water to the top. Can I somehow correct his mistake ?

[@DIYDime]

Yes get a syringe with a little hose and try to get some out.

[@ericz9856]

Ty for posting this $$$ saving video. My question is, do 3A charger qualify as low amp charger? Ty

[@DIYDime]

The lower is better but yes it will work too

[@ericz9856]

@ Thanks

[@quichung747]

Hi where did you buy the power supply ?

[@DIYDime]

DC Power Supply Variable, 30V 10A... www.amazon.com/dp/B0B7WBDXWN?ref=ppx_pop_mob_ap_share

[@quichung747]

Thank you so much

[@Mr.inky213]

The 3 year old AGM battery we hsve for our 2020 jeep( 2nd one for stop/start) Ours is only 220 cca. However our big battery ( for the main engine functions, you know starter and such) Is 750cca. Ours is a tiny small 12v battery, would this work for thsg to? ​@DIYDime

[@onpointproductions7272]

I have a 5 yr old agm battery and would like to know what all I need to charge and fix this

[@TSINED1]

You need time to let water goes to into glass mats , and start charging after that.

[@ericz9856]

How much time should I wait roughly?

[@yello6230]

Hello. When charging, do I have to open all 6 plugs?

[@DIYDime]

Yes

[@andy_truong]

did you charge it at 13.7v 2amps on the first charge or was that for the second charge?

[@DIYDime]

First 13.7

[@andy_truong]

@ and was the second charge 13.7 or 14.7?

[@DIYDime]

That is correct

[@TranTek]

how low did you discharge it to ?

[@DIYDime]

11,.5 Volts and I did cycle twice.

[@chulalo100]

Hi DIYDIME, I have a bmw motorcycle agm battery (12V 8Ah 120 A) how many Amps should I slow charge it and how much Water do I need to ad to the cells?

[@DIYDime]

2 Amps, do not flood cells, only little bit each cell

[@fatherdamo2]

If you know the original weight of the battery that should help you decide how much water has evaporated and how much distilled water to add to each cell. e.g battery 120grams lighter, add 20ml to each of the 6 cells (120ml).

[@trailchaser2]

Hey man thanks for the video. I need to replace my original 15 year old BMW AGM battery, Never had an issue except I had some some rough starts lately and the radio stays on only for a minute then it turns off with the low battery symbol on the dash. Since new BMW battery is out of my price point, in your opinion, should I try this process or buy new budget replacement battery around 200$ How long do would you say the original recovered battery would last? Edit My battery voltage is at 12.33v

[@DIYDime]

Wow 15 year? I can say you got pretty good run out of your battery!!! Don’t know if I would wanna mess with 15 year old battery but I guess you can try, you never know.

[@marcob.7801]

Thank you so much for posting this! I've learned more about the construction of flat plate AGM and how to "potentially" bring them back to life. BTW, I have an AGM that's 2 years old. I left in a vehicle w/o starting for 10 months. My multimeter reads it as .53volts! Yup, that's right .53 volts. should I even bother DIYDime? Do you think you could do a video on potentially using an inverter welder like on a lead acid battery? Is this feasible?

[@DIYDime]

Use a smart charger if you have. These chargers can adjust the charging profile according to the battery's condition and prevent overcharging. Set the charger to a low amp setting 2 amps. If the charger has a desulfation or reconditioning mode, use it. This can help break down lead sulfate crystals that may have formed on the battery. Connect the charger and start the charging process. Monitor the voltage and temperature. If the battery becomes hot or swollen, stop charging immediately. Charge the battery for 24-48 hours. A deeply discharged battery may require a long time to reach full charge. Periodically check the voltage. If the voltage rises steadily, it indicates the battery is accepting the charge. After charging, perform a load test using a battery tester. This will help determine if the battery can hold a charge and provide adequate power. Let the battery rest for a few hours after charging, then check the voltage again. It should hold around 12.6-12.8 volts if it's healthy.

[@SolarHarvestSolutions]

Need to install those caps on quickly because those are pressure regulated, and it maintains the atmosphere inside the battery void of oxygen, which will cause calcification in a very short period of time, I have performed that procedure many times

[@Spoderman5000]

What is the purpose of the low amp charge after refilling with water? Why not just add the appropriate amount of water and let the car’s alternator charge it for you while you drive? Does the slow charging help reduce heat buildup or prevent some other damage? Edited to add: Also, why do we need to discharge and recharge multiple times in order to achieve proper restoration? I appreciate anyone who can help me understand this! 🙏

[@DIYDime]

Charging an AGM (Absorbent Glass Mat) battery on low amps after filling it with distilled water is essential for the following reasons: 1. Controlled Electrolyte Absorption: When you add distilled water, the electrolyte concentration changes. Low-amp charging allows the electrolyte to mix thoroughly and ensures the battery’s internal chemistry stabilizes without causing damage. 2. Preventing Overheating: High charging currents can generate heat, which may damage the delicate internal plates of an AGM battery. Low-amp charging minimizes this risk. 3. Reforming the Plates: After adding water, low-amp charging helps to slowly reactivate and reform the lead plates in the battery, ensuring they function optimally without excessive stress. The process of discharging an AGM battery after a full charge and then repeating the charge-discharge cycle, often referred to as conditioning or cycling, is essential for several reasons, especially in cases where the battery has been heavily discharged, stored for a long time, or recently refilled with distilled water. Here’s why this is important: During regular use or improper charging, the individual cells in a battery can become imbalanced (i.e., they have slightly different charge levels).Discharging and recharging cycles help ensure all cells reach the same charge level, maximizing performance. Over time, the battery’s ability to hold a full charge may diminish due to sulfation or plate degradation. Cycling helps break down small sulfate crystals on the plates and restores the battery’s maximum capacity.

[@Spoderman5000]

Wow thank you for taking the time to provide such a thorough explanation! I really appreciate your quick response!

[@vicc6744]

did it start?

[@DIYDime]

😂Yes it did! Working like new

[@jethrobenjiro]

@@DIYDimehow many water u add? Zuur or not?

[@DIYDime]

@@jethrobenjiro in my case it was only full syringe for each cell

[@ChetJang]

Most AGM batteries I have seen like Optima batteries have no access to internals. Once they are dead even from leaving a dome light on they are gone! I have tried multiple tricks without success. I even used a voltage supply like yours at both low and higher voltages without any luck even hooking up a good battery doesn't work!

[@mrmani5536]

You need to connect another good battery parallelly when charging the agm.

[@ЖекаФамилия-е3й]

Лузер😂

[@ChetJang]

@@mrmani5536 Tried already did nothing.

[@hswing11]