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Post by spandi on Nov 4, 2013 19:56:37 GMT -5
And how does the scoot R/R charge it? Like I said those types of batteries require a special charger. Alleyoop My apologies, I should have clarified. You can use a standard charger provided it does not have an automatic desulfation mode, so it works as a straight swap with the scoots R/R unit. More than likely your thinking of Lithium ION batteries, (which can overheat and cause fires) Which (thankfully) the Shorai is not. |
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Post by alleyoop on Nov 4, 2013 21:05:58 GMT -5
Then there is no need for that special LFX charger if that is the case. That charger has a balancer just like the one I have to use on my Electric RC airplanes. I cannot use a regular charger on those batteries, the special charger that I have will handle 12v batteries and any of the other Common RC batteries. Alleyoop  |
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Post by prodigit on Nov 4, 2013 21:25:35 GMT -5
On a scoot, buggy, or car there's no other way than to have a BMS built in; otherwise you can't even connect it to the scoot, as the vehicle's alternator will charge the battery.
All the BMS batteries need is a voltage higher than 12V to charge. Any voltage much higher than 14V usually gets lowered by the BMS.
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Post by spandi on Nov 4, 2013 21:28:31 GMT -5
Well the charger I had DID have the automatic disulfation mode, so it made sense to pick this unit up. Besides, the battery has a special outlet made for that particular charger.
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Post by alleyoop on Nov 4, 2013 21:46:01 GMT -5
Well I contacted them and asks some questions so hopefully they will respond with the answers.
Alleyoop
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Post by spandi on Nov 4, 2013 21:48:12 GMT -5
Well I contacted them and asks some questions so hopefully they will respond with the answers. Alleyoop You mean you contacted Shorai? |
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Post by gingel on Nov 5, 2013 3:03:07 GMT -5
And how does the scoot R/R charge it? Like I said those types of batteries require a special charger. Alleyoop From what i understand there is no problem with the scooter R/R to charge it. The special charger is for doing a balance to the cells once in a while. |
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Post by JerryScript on Nov 5, 2013 17:28:18 GMT -5
BMS units with variable charge cycles are available, basically replacing the specialty charger with an all in one unit. Research on the product is the key here, search forums and reviews to be sure the BMS will do what you need it to do. A good charging system for LiFePO4 will monitor each cell, bleeding off the charging current on those already fully charged while the others catch up, and going through a cycle of slow charge first, then faster charge rate at the end, then balancing, then final charging.
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Post by prodigit on Nov 5, 2013 19:39:26 GMT -5
My XTreme XB700Li scooter/moped had a LiPo4 battery. When it was fully charged, the regenerative braking did not work, and it braked very badly, but as soon as you had one or two accelerations done, it had enough space in the battery, to store that charge, and the bike would brake using the electric motor, storing the energy in the batteries.
With such batteries it's always good to have a capacitor in parallel with the battery; to even out the voltage fluctuations somewhat.
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Post by alleyoop on Nov 5, 2013 19:47:39 GMT -5
BMS units with variable charge cycles are available, basically replacing the specialty charger with an all in one unit. Research on the product is the key here, search forums and reviews to be sure the BMS will do what you need it to do. The following your every day R/R does not do this, which is my concerns. Alleyoop |
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Post by alleyoop on Nov 5, 2013 19:49:32 GMT -5
BMS units with variable charge cycles are available, basically replacing the specialty charger with an all in one unit. Research on the product is the key here, search forums and reviews to be sure the BMS will do what you need it to do. The following your every day R/R does not do this, which are my concerns. Alleyoop |
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Post by spandi on Nov 5, 2013 22:43:21 GMT -5
Everything I've checked up on (and know by having one) says that a STANDARD charger (so long as there is not an automatic desufation mode that might overcharge and damage the battery) will work, and they are being marketed and sold as a direct replacement to the old lead-acid type. I don't think the electrical engineers and their respective companies would be doing so with a product that would not work in a standard motorcycle or motor scooter charging system. (Unless they're masochistically fond of lawsuits)
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Post by alleyoop on Nov 5, 2013 23:01:38 GMT -5
I am still waiting on a response from them, I really don't expect an answer but you never know.
I will post their response if and when they answer, but I question the NEED for a Special Balancing Charger when I know the R/Rs do not have those capabilities.
Alleyoop
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Post by spandi on Nov 5, 2013 23:17:37 GMT -5
I wondering if it is just the fact that you have to be a bit more careful in using a charger on a battery when everything is going IN and nothing is going out.
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Post by alleyoop on Nov 5, 2013 23:47:36 GMT -5
I was just reading some info on the Batteries and they do mention if a regular charger is used the battery can easely be damaged with a constant charge and will get overcharged. They even mention and say a Junior Battery Tender will go into full charge mode and can damage it due to overcharging it. They also dwell on the Batteries for Heavy Loads for Starting motors over and over and not losing the AMPS like the lead acid batteries for a long time. But in not so many words they are basically saying they are throw a-ways after a period of time.
Since you have one on yours SPANDI have you put a VOLT METER on the battery while the scoot is running and what does it register also what does your AMP meter read?
Alleyoop
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..BAD TO THE BONE..
