Excellent timing as we are due for new house batteries and our existing 6V lead acid golf carts have worked excellent for years and years so we were just going to replace them with the same. Nothing else in the electrical system will require an upgrade so it is by far the easiest and most cost effective. Your videos are extremely appreciated, thank you for the time and effort that it takes to make and post them.
Hi Jeff, why are 2x 6V golf batteries better in series better than 2x 12 group 24 or 31 in parallel? Or simply, why 6V golf than 12V batteries? Both are deep cycle. The increased AH of 2x 6V golf are good, but is there another reason?
Golf cart batteries are great, however, if 1 fails, it leaves you with low voltage and no power, if you have 12v batteries (2 or more) and 1 fails, you can disconnect the failed battery and just have a smaller bank and can still use your most important equipment.
Strange totally not mentioning LFP.. I swapped 2 years ago and what I learned is that it requires less equipment then I did install. The set of 280Ah EVE LFP with BMS cost 800 euro (or USD), its size and weight less then 1 of the 2 105Ah deep cycle batteries it replaced, almost tripling the usable capacity. Over a week selfsufficient on a mooring with 130wp solar, it is really working. Extra equipment: dc-dc converter (500€) between starter battery and LFP to manage load on alternator and protect it. LFP should also last much longer, so more investment upfront but lower total cost and better performance... just my 2 cents😊
Worth mentioning, Deep Discharging even Deep Cycle Batteries, always damages the batteries. Even with Lithium, as a Chinese Lifepo4 Battery Nanufacturer told me, discharging,them below 50% Capacity, will show up as a reduced number of available charge Cycles. If the Lithium Batteries in mobile phones and Tablets are anything to go by, and they could well, then charging them above 85% Capacity reduces their service life as well. to me, a lot more information on how best to treat all types of Batteries, to get the best out of them is becoming urgently needed Oh and very rapid charging Lithium Batteries may be bad juju for service life as well. Seems there are no free lunches doesn't it ? 🤔
This depends on your usage. To use made-up example figures, if you have a 100ah battery, if you deplete your battery to 60% it will last for 1000 charge cycles, but if you deplete to 50% you only get 800 charge cycles. The total output over the life of the battery is approximately the same whether you use 40amps 1000 times, or 50 amps 800 times. Both of these situations give a life of 4000 amps. These numbers are example only, so are not real-life figures, but the notion is the same in real life. The more you drain down, the less cycles you will get, but if you drain down twice a week, the first example will last for 10 years while the second example only lasts for 8 years. If you're planning to replace your battery after 5 years anyway, then whether the charge cycles will last for 8 or 10, doesn't particularly matter, since they'll be replaced before end-of-life anyway.
@@davidmurn772 Which just like with Lead batteries, confirms going below below 50% Capacity damages the battery, where there you realise it or not. that you say the amount used is exactly the same is an assumed presumption, and has no scientific backing, whereas with Lead batteries, it is confirmed that by going below 50% Capacity, you Hammer the shit out of them, and dramatically reduce their service life. My Offgrid, cheap heavy Duty Agricultural Tractor Batteries, were still good after 15 years of use (minus 45 degrees C temps, that hadn't been forecasted cracked the cases) by never going below a 50% state of Charge, and only using distilled water to top them up, fits what is known about Lead Acid Batteries. Compared to those, we actually know very little about Lithium, but early indications are pointing towards. Rapid fast charging shortens their service life, Charging them above 85% Capacity shortens their service life, and deep Discharging shortens their service life. That no matter what you do to them, you still get the same total amperage storage usage out of them, is an unproven assumption that is very likely incorrect. You may not like that, I definitely don't like that, and frankly, until we get some solid Factual basis, I am no longer prepared to be such a Lab Rat, even if given a free Lifepo4 House Batery Bank. Why, because there isn't enough Clarity about them to provide a coherent Testing Starting Point, as you cannot get reliable data if all you are starting with, is assumptions and Presumptions. At least with AGM, "Deep Discharge " batteries, I can count on good solid Lead plate construction from the right supplier, and by Treating them correctly (by Not Deep Discharging them) , I can guarantee as close as makes no difference a ten year service life, and no potentially flaky Built in battery monitor, its settings based on assumptions and presumptions needed. The only thing I really have to have as a priority with them, is the ability to get them back to 100% state of charge rapidly. Also, and not unimportant, is the ability with Lead to have close to 100% easy Recycling ability. Genuine Lithium battery Recycling presently has all the hallmarks of being Fictional. within the next 10 years, Facts based knowledge, plus genuine clean Lithium Recycling, should be available, along with potentially, even better batteries. So guess what gets "Me" from here to there ? AGM, or maybe Carbon Lead (a fairly safe bet too) Batteries. Guess what the range of electric cars with flooded Lead acid batteries was in 1911 ? Well this may surprise you, but it was over 700 miles. Have we progressed in the years since ? Probably not as much as we would like to think. 🤔
Hi! I currently run a 3 battery system on my boat consisting of 3 x lead acid batteries. 1 x start and 2 x house. I charge all 3 batteries from both the engine and an onboard 240v 3 bank battery charger. I plan on swapping the 2 x lead acid house batteries for a single 100ah lithium hybrid (hybrid for back up start battery) I'll be running a DC DC charger to charge the lithium while underway. My question is, can i use my original 3 bank battery charger (Prosport 20amp 3 bank) to charge both lead acid and lithium by connecting one of the charger banks directly to my DCDC thus "tricking" the battery charger to supply continuous power to the DCDC and then just letting the lithium BMS do what it needs to do and charge the battery? Thanks
Assuming this isn't for engine cranking, if the objective is to increase total USABLE Ah, shouldn't the fellow boater at least consider LiFePO4? This would increase usable Ah substantially, and extend the service life of the battery bank. Obviously, this might require an upgrade to the battery charger as well, but the question didn't indicate a financial constraint.
Excellent timing as we are due for new house batteries and our existing 6V lead acid golf carts have worked excellent for years and years so we were just going to replace them with the same. Nothing else in the electrical system will require an upgrade so it is by far the easiest and most cost effective. Your videos are extremely appreciated, thank you for the time and effort that it takes to make and post them.
Hi Jeff, why are 2x 6V golf batteries better in series better than 2x 12 group 24 or 31 in parallel? Or simply, why 6V golf than 12V batteries? Both are deep cycle. The increased AH of 2x 6V golf are good, but is there another reason?
Golf cart batteries are great, however, if 1 fails, it leaves you with low voltage and no power, if you have 12v batteries (2 or more) and 1 fails, you can disconnect the failed battery and just have a smaller bank and can still use your most important equipment.
Strange totally not mentioning LFP.. I swapped 2 years ago and what I learned is that it requires less equipment then I did install. The set of 280Ah EVE LFP with BMS cost 800 euro (or USD), its size and weight less then 1 of the 2 105Ah deep cycle batteries it replaced, almost tripling the usable capacity. Over a week selfsufficient on a mooring with 130wp solar, it is really working. Extra equipment: dc-dc converter (500€) between starter battery and LFP to manage load on alternator and protect it. LFP should also last much longer, so more investment upfront but lower total cost and better performance... just my 2 cents😊
Worth mentioning, Deep Discharging even Deep Cycle Batteries, always damages the batteries. Even with Lithium, as a Chinese Lifepo4 Battery Nanufacturer told me, discharging,them below 50% Capacity, will show up as a reduced number of available charge Cycles. If the Lithium Batteries in mobile phones and Tablets are anything to go by, and they could well, then charging them above 85% Capacity reduces their service life as well. to me, a lot more information on how best to treat all types of Batteries, to get the best out of them is becoming urgently needed Oh and very rapid charging Lithium Batteries may be bad juju for service life as well. Seems there are no free lunches doesn't it ? 🤔
This depends on your usage.
To use made-up example figures, if you have a 100ah battery, if you deplete your battery to 60% it will last for 1000 charge cycles, but if you deplete to 50% you only get 800 charge cycles. The total output over the life of the battery is approximately the same whether you use 40amps 1000 times, or 50 amps 800 times. Both of these situations give a life of 4000 amps. These numbers are example only, so are not real-life figures, but the notion is the same in real life.
The more you drain down, the less cycles you will get, but if you drain down twice a week, the first example will last for 10 years while the second example only lasts for 8 years. If you're planning to replace your battery after 5 years anyway, then whether the charge cycles will last for 8 or 10, doesn't particularly matter, since they'll be replaced before end-of-life anyway.
@@davidmurn772 Which just like with Lead batteries, confirms going below below 50% Capacity damages the battery, where there you realise it or not. that you say the amount used is exactly the same is an assumed presumption, and has no scientific backing, whereas with Lead batteries, it is confirmed that by going below 50% Capacity, you Hammer the shit out of them, and dramatically reduce their service life. My Offgrid, cheap heavy Duty Agricultural Tractor Batteries, were still good after 15 years of use (minus 45 degrees C temps, that hadn't been forecasted cracked the cases) by never going below a 50% state of Charge, and only using distilled water to top them up, fits what is known about
Lead Acid Batteries. Compared to those, we actually know very little about Lithium, but early indications are pointing towards. Rapid fast charging shortens their service life, Charging them above 85% Capacity shortens their service life, and deep Discharging shortens their service life. That no matter what you do to them, you still get the same total amperage storage usage out of them, is an unproven assumption that is very likely incorrect. You may not like that, I definitely don't like that, and frankly, until we get some solid Factual basis, I am no longer prepared to be such a Lab Rat, even if given a free Lifepo4 House Batery Bank. Why, because there isn't enough Clarity about them to provide a coherent Testing Starting Point, as you cannot get reliable data if all you are starting with, is assumptions and Presumptions. At least with AGM, "Deep Discharge " batteries, I can count on good solid Lead plate construction from the right supplier, and by Treating them correctly (by Not Deep Discharging them) , I can guarantee as close as makes no difference a ten year service life, and no potentially flaky Built in battery monitor, its settings based on assumptions and presumptions needed. The only thing I really have to have as a priority with them, is the ability to get them back to 100% state of charge rapidly. Also, and not unimportant, is the ability with Lead to have close to 100% easy Recycling ability. Genuine Lithium battery Recycling presently has all the hallmarks of being Fictional. within the next 10 years, Facts based knowledge, plus genuine clean Lithium Recycling, should be available, along with potentially, even better batteries. So guess what gets "Me" from here to there ? AGM, or maybe Carbon Lead (a fairly safe bet too) Batteries. Guess what the range of electric cars with flooded Lead acid batteries was in 1911 ? Well this may surprise you, but it was over 700 miles. Have we progressed in the years since ? Probably not as much as we would like to think. 🤔
12v 260 ah. So you can use 130 ah of the 260 ah?
Hi! I currently run a 3 battery system on my boat consisting of 3 x lead acid batteries. 1 x start and 2 x house. I charge all 3 batteries from both the engine and an onboard 240v 3 bank battery charger. I plan on swapping the 2 x lead acid house batteries for a single 100ah lithium hybrid (hybrid for back up start battery) I'll be running a DC DC charger to charge the lithium while underway. My question is, can i use my original 3 bank battery charger (Prosport 20amp 3 bank) to charge both lead acid and lithium by connecting one of the charger banks directly to my DCDC thus "tricking" the battery charger to supply continuous power to the DCDC and then just letting the lithium BMS do what it needs to do and charge the battery? Thanks
Assuming this isn't for engine cranking, if the objective is to increase total USABLE Ah, shouldn't the fellow boater at least consider LiFePO4? This would increase usable Ah substantially, and extend the service life of the battery bank. Obviously, this might require an upgrade to the battery charger as well, but the question didn't indicate a financial constraint.