I have AGM battery's in my vehicles and I charge them with a top of the line smart battery charger, approximately every 3 months in a cold Winter and every month in the summer. Going on 7 years with the same battery's.
*I get it, this was a bit heavy on the math and boredom :) I made super simple calculators that will tell you the charge times for your battery even if it's rated in AH, RC, or CCA. Here's a link to a video that shows what to do and where to go! Cheers! **ua-cam.com/video/FAbU9NvL52E/v-deo.html*
Hi Home Battery Bank, I found your blog on charging car batteries. I have a 80 Ah deep cycle marine battery , that should use NOCO GENIUS5. Do you think could use the 2amp NOCO GENIUS2 ? From what I understand is that it will just take longer to charge? I was not sure what was meant "slower charge means that your battery will be the most efficient in converting the electricity into stored chemical energy." Can you help me understand? I am not sure why I find batteries and electricity so difficult : )
Yes, you shouldn't have any problems except that it will take a lot longer to charge. Basically, you're just converting electrical energy into stored chemical energy and a battery can only do that at a certain rate. If you exceed it, like if you used a 50amp charger, the battery would "charge" extremely fast but would lose tons of electrolyte due to heat loss from not being able to convert fast enough. The 10% rule is a good rule of thumb (a 10amp charger for a 100ah battery). But having one that's a little lower won't hurt anything, it'll just take longer. I have been using a 4amp charger for my 220ah battery bank without issue for 7 years. If I needed to charge it faster, I'd switch to a different charger, but for light use here and there my 4amp charger has been fine because I go weeks or months between use and don't mind the charging time.
awesome, thanks for sharing the forumla. was having trouble finding an equation to determine the charging duration of my electric bicycle but this does the trick and it is also consistent with what is stated by the manufacturer. Cheers
Shirt pocket hydrometer had cracked rubber bulb, got a 1 foot long 1 from Amazon with floating glass bulb. 12V deep cycle battery with posts and threaded studs on top. Heavy, about 65#. Sat on a 2x6 on concrete floor for 2 years. Trying to charge it. Reads on the line @ Replace/Fair. A little into the Fair. Cen-Tech 2,10,40 charger. Only been using 2 Amp setting for maybe 10 hours. Fluid level was fine. Any kind of stuff I can put in the 6 holes to renew it for a higher charge? I really like your charge times versing Amps info.
I don't ever add anything except distilled water to the cells if they are low. Some people add things or drain everything out and do various things to renew the battery but that's not my cup of tea. I think the primary reason why the battery is decreasing in performance in the first place is due to sulfation build-up on the plates in the battery, and changing or adding to the electrolyte isn't going to change that. Your lead plates get covered with sulfate crystals whenever the battery is not in a state of full-charge and connected to a float charger. The sulfation happens when a battery is in a state of discharge and happens faster the more the battery is discharged. Lead-acid batteries discharge at about 4-5% per month when just sitting in your garage, for example, and maybe a bit faster if your garage gets hot. After 2 years of sitting, I would assume your battery was at 100% discharge or close to it. Sulfate crystals have been building on those plates for a long time. They increase the internal resistance of your battery which means it's harder for the battery to accept a charge and it's harder for the battery to pass current through it when you put a load on it. These crystals can also build up enough to touch each other from one plate to another which will short out a cell(s) internally. If they build up thick enough without touching, they'll simply stop the battery from charging or giving off current. You could try to use a charger that has a desulfation/equalization/recovery mode. This is a controlled overcharge which will pump more amps into the battery than it can chemically convert into stored energy. This will cause your battery to sound like it's boiling due to electrolysis and the increased current will agitate the sulfation on the lead plates and cause some (not all) of it to flake off and drop down to the sediment area at the bottom. There's always the risk of these flakes piling up on the bottom and bridging a connection between the bottoms of the plates and creating an internal short. At this point though, it might be your only plan to restore your battery.
@@HomeBatteryBank Thanks for the come back. My charger does have a 200 AMP Quick Start but don't think I will try it. I will probably just trade in for core on a new battery. I put a pump up hydraulic lift for the back of my pick up. Pumping that lever 100's of time for picking up heavy wood is a drag. I mounted a 12 volt winch on it and it works great. I am just needing a dependable battery to operate it. Thanks for your time. Interesting info. I did print out bat charging times/Amps and have it pinned to my wall in my shed now.
@@x2malandy A new battery is probably the best choice if it's been sitting that long without a charge. No sense in spending money on a charger with a desulfation mode only to restore a battery to a fraction of its original capacity (if at all). The 200amp quick start on your charger is for a quick burst to jump your car, not to desulfate a battery for a couple hours. I'm not sure if your charger is able to be connected indefinitely, but for your new battery you could just get something like a 5amp Deltran Battery Tender which has quick disconnect cables. Keep the eyelet cables permanently attached and disconnect/reconnect to the charger during/after use. You can leave that charger connected indefinitely, I've been using one for 5 years daily.
@@HomeBatteryBank Good advice. I have a stepson that hooked up some large 6 volt battery's to his camper (in series) to run things from time to time. Someone told him to not let them run down below 50% then recharge. I have been doing that to my golf cart now since buying 6 battery's four years ago. They still act like they are brand new. I will get one of those 5amp deals for the new 12 volt. I will copy and paste to a notepad from your comment. Nice getting advice from a true expert. Enjoy life and keep safe.
My guess its in hours because mine is : 52Ah / 0.8 / 1.5amp = 43.333333, it's not 43 minutes. But if I leave out the .8 out & just 52 Ah divided by 1.5amp = 34.6. not sure what the 0.8 represents but 34 hours sounds about right
this was very very helpful thanks. just the 1 min point. had totally undercharged my battery which showed when trying to start my car. had run completely flat since it had to wait till i taught myself how to weld.... aaand then some. :D aka 10 months
Mate I'm just way to stupid for all that lol I have a brand new motorcycle battery just wanted to know if I put it on 2 amps how long it takes sorry you lost me
I have AGM battery's in my vehicles and I charge them with a top of the line smart battery charger, approximately every 3 months in a cold Winter and every month in the summer. Going on 7 years with the same battery's.
*I get it, this was a bit heavy on the math and boredom :) I made super simple calculators that will tell you the charge times for your battery even if it's rated in AH, RC, or CCA. Here's a link to a video that shows what to do and where to go! Cheers! **ua-cam.com/video/FAbU9NvL52E/v-deo.html*
I know Im kind of randomly asking but do anybody know a good site to watch new movies online?
@Jonathan Miller Flixportal :P
@August Johnny thanks, I went there and it seems like they got a lot of movies there =) Appreciate it !!
@Jonathan Miller no problem =)
Where did you get the 0.8? Thank you
Thank you so much for presenting this
What if u have a 25 amp battery charger how long do u charge a car battery up
What if overcharged ? Or if we don't remove from Charging ever ?
Mine fried after 1 year of perfect starts.
Thanks sparky!
Hi Home Battery Bank, I found your blog on charging car batteries. I have a 80 Ah deep cycle marine battery , that should use NOCO GENIUS5. Do you think could use the 2amp NOCO GENIUS2 ? From what I understand is that it will just take longer to charge?
I was not sure what was meant "slower charge means that your battery will be the most efficient in converting the electricity into stored chemical energy." Can you help me understand?
I am not sure why I find batteries and electricity so difficult : )
Yes, you shouldn't have any problems except that it will take a lot longer to charge. Basically, you're just converting electrical energy into stored chemical energy and a battery can only do that at a certain rate. If you exceed it, like if you used a 50amp charger, the battery would "charge" extremely fast but would lose tons of electrolyte due to heat loss from not being able to convert fast enough. The 10% rule is a good rule of thumb (a 10amp charger for a 100ah battery). But having one that's a little lower won't hurt anything, it'll just take longer. I have been using a 4amp charger for my 220ah battery bank without issue for 7 years. If I needed to charge it faster, I'd switch to a different charger, but for light use here and there my 4amp charger has been fine because I go weeks or months between use and don't mind the charging time.
Thanks a lot, this helped me 💯 percent. I appreciate
Any harm connecting two trickle chargers to the battery. Have them sitting around and my car is a heavy user being an Audi
awesome, thanks for sharing the forumla. was having trouble finding an equation to determine the charging duration of my electric bicycle but this does the trick and it is also consistent with what is stated by the manufacturer. Cheers
Glad it gives you a good ball park estimate 🙂 Thanks for watching!
Thank you brother for your intel
Thanks for making this video. Though your 6H to 12H helped me right away. I wanted to see how you did it xD thanks
Shirt pocket hydrometer had cracked rubber bulb, got a 1 foot long 1 from Amazon with floating glass bulb. 12V deep cycle battery with posts and threaded studs on top. Heavy, about 65#. Sat on a 2x6 on concrete floor for 2 years. Trying to charge it. Reads on the line @ Replace/Fair. A little into the Fair. Cen-Tech 2,10,40 charger. Only been using 2 Amp setting for maybe 10 hours. Fluid level was fine. Any kind of stuff I can put in the 6 holes to renew it for a higher charge? I really like your charge times versing Amps info.
I don't ever add anything except distilled water to the cells if they are low. Some people add things or drain everything out and do various things to renew the battery but that's not my cup of tea. I think the primary reason why the battery is decreasing in performance in the first place is due to sulfation build-up on the plates in the battery, and changing or adding to the electrolyte isn't going to change that. Your lead plates get covered with sulfate crystals whenever the battery is not in a state of full-charge and connected to a float charger. The sulfation happens when a battery is in a state of discharge and happens faster the more the battery is discharged. Lead-acid batteries discharge at about 4-5% per month when just sitting in your garage, for example, and maybe a bit faster if your garage gets hot. After 2 years of sitting, I would assume your battery was at 100% discharge or close to it. Sulfate crystals have been building on those plates for a long time. They increase the internal resistance of your battery which means it's harder for the battery to accept a charge and it's harder for the battery to pass current through it when you put a load on it. These crystals can also build up enough to touch each other from one plate to another which will short out a cell(s) internally. If they build up thick enough without touching, they'll simply stop the battery from charging or giving off current. You could try to use a charger that has a desulfation/equalization/recovery mode. This is a controlled overcharge which will pump more amps into the battery than it can chemically convert into stored energy. This will cause your battery to sound like it's boiling due to electrolysis and the increased current will agitate the sulfation on the lead plates and cause some (not all) of it to flake off and drop down to the sediment area at the bottom. There's always the risk of these flakes piling up on the bottom and bridging a connection between the bottoms of the plates and creating an internal short. At this point though, it might be your only plan to restore your battery.
@@HomeBatteryBank Thanks for the come back. My charger does have a 200 AMP Quick Start but don't think I will try it. I will probably just trade in for core on a new battery. I put a pump up hydraulic lift for the back of my pick up. Pumping that lever 100's of time for picking up heavy wood is a drag. I mounted a 12 volt winch on it and it works great. I am just needing a dependable battery to operate it. Thanks for your time. Interesting info. I did print out bat charging times/Amps and have it pinned to my wall in my shed now.
@@x2malandy A new battery is probably the best choice if it's been sitting that long without a charge. No sense in spending money on a charger with a desulfation mode only to restore a battery to a fraction of its original capacity (if at all). The 200amp quick start on your charger is for a quick burst to jump your car, not to desulfate a battery for a couple hours. I'm not sure if your charger is able to be connected indefinitely, but for your new battery you could just get something like a 5amp Deltran Battery Tender which has quick disconnect cables. Keep the eyelet cables permanently attached and disconnect/reconnect to the charger during/after use. You can leave that charger connected indefinitely, I've been using one for 5 years daily.
@@HomeBatteryBank Good advice. I have a stepson that hooked up some large 6 volt battery's to his camper (in series) to run things from time to time. Someone told him to not let them run down below 50% then recharge. I have been doing that to my golf cart now since buying 6 battery's four years ago. They still act like they are brand new. I will get one of those 5amp deals for the new 12 volt. I will copy and paste to a notepad from your comment. Nice getting advice from a true expert. Enjoy life and keep safe.
My car battery is 7plates NS40 type my charger is 3 amps..
My question how many hours to full charge..
Hi nice video So the alternator needs to produce 40aMp to keep my battery charged when the vehicle is running that's my question?
thank you so much this helped alot
Thanks for the video! Does your formula of: AH / 0.8 / charger Amps, = time in minutes or hours?
My guess its in hours because mine is : 52Ah / 0.8 / 1.5amp = 43.333333, it's not 43 minutes. But if I leave out the .8 out & just 52 Ah divided by 1.5amp = 34.6. not sure what the 0.8 represents but 34 hours sounds about right
So what you're saying is, "I won't be driving to get pizza tonight"
You are a genius!
this was very very helpful thanks. just the 1 min point. had totally undercharged my battery which showed when trying to start my car. had run completely flat since it had to wait till i taught myself how to weld.... aaand then some. :D aka 10 months
I just plug in the old charger set to 12v 2amp and charge over night
Mate I'm just way to stupid for all that lol I have a brand new motorcycle battery just wanted to know if I put it on 2 amps how long it takes sorry you lost me
Wow that’s awesome 😎
Good video thanks
Any insight into why don't they put amp hours on car batteries, seems like it would be a selling point?
It was just a simple question..
Okie dokie 👍
Good thing this guy ain’t a teacher everyone would fail he’s terrible at explaining things.
Genius
Thanks 😊
Oh god this will take way too long to charge...
OMG... this told me a whole bunch. Bout nothing...
You should have gone to
MIT....
Funny
This is incredibly boring
Sorry. 😭 I refunded your bank account for the time I took up. I'll do better next time 😂 Cheers! 🍻
Yawn