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Post by alleyoop on Nov 7, 2013 1:46:27 GMT -5
That LFX14A4-BS12 battery does not have a BMS, the special charger is the BMS. If you allow that battery to be charged by the poles rather than the charging port, you will experience what I did with my first set of LiFePO4 (I posted it above). One of the cells will eventually become unbalanced, causing either the other cells to overcharge, or the battery to never really reach full charge. I didn't take the advice of others in the electric bicycle forums who told me this was what would happen, and it did happen to me (over $500 learning experience). Maybe your experience will be different, an ebike drains the battery below 50%, starting a scooter shouldn't drain it that much. If you use the special charger weekly, it may work, considering your not normally draining your battery too far with a normal start on a tuned up scooter. There you go PROVE in the PUDDING, I new they were not telling the whole story. What they will say when it goes bad and you complian is that you overcharged it have a nice day. I knew it was to good to be true, just another way to sell a warehouse full that they cannot get rid of so they are now trying to push it onto the scoots and motorcycle folks(HAHA). Thanks Jerry Alleyoop |
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Post by spandi on Nov 7, 2013 1:51:38 GMT -5
That LFX14A4-BS12 battery does not have a BMS, the special charger is the BMS. If you allow that battery to be charged by the poles rather than the charging port, you will experience what I did with my first set of LiFePO4 (I posted it above). One of the cells will eventually become unbalanced, causing either the other cells to overcharge, or the battery to never really reach full charge. I didn't take the advice of others in the electric bicycle forums who told me this was what would happen, and it did happen to me (over $500 learning experience). Maybe your experience will be different, an ebike drains the battery below 50%, starting a scooter shouldn't drain it that much. If you use the special charger weekly, it may work, considering your not normally draining your battery too far with a normal start on a tuned up scooter. Thanks, hopefully everything will be alright. One of the reasons I bought the separate charger was to maintain current levels. I've had far too many expensive "Learning experiences" already.  |
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Post by alleyoop on Nov 7, 2013 1:51:43 GMT -5
Here is the first Questionable situation" Straight from Shorai: LFX™ batteries should be recharged whenever voltage drops to 13.1 volts, or sooner. If you have a vintage, custom, or off-road vehicle which has NO draw on the battery when key is OFF, then you should only need to charge your LFX™ battery once a year. However, most modern street bikes have a draw even when key is off, to support clock, computer, alarms, or other devices. This draw will eventually drain the battery, which is damaging and could void your warranty. So if you are not riding twice a month, then you should charge the battery every few weeks. “Smart” lead-acid chargers with automatic cutoff may be used for periodic charging, but will NOT work as a tender/maintainer and should be disconnected immediately after charge has finished. Older lead chargers without automatic shut-off should never be used. Improper charging is dangerous and will void your warranty. A Shorai BMS Charger - with Store Mode - is highly recommended for anyone who rides less than twice a month. Alternatively, you may disconnect the negative cable from the battery for storage, and charge once per year in that case. More to come Here is the site: shoraipower.com/Alleyoop |
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Post by spandi on Nov 7, 2013 2:06:11 GMT -5
That LFX14A4-BS12 battery does not have a BMS, the special charger is the BMS. If you allow that battery to be charged by the poles rather than the charging port, you will experience what I did with my first set of LiFePO4 (I posted it above). One of the cells will eventually become unbalanced, causing either the other cells to overcharge, or the battery to never really reach full charge. I didn't take the advice of others in the electric bicycle forums who told me this was what would happen, and it did happen to me (over $500 learning experience). Maybe your experience will be different, an ebike drains the battery below 50%, starting a scooter shouldn't drain it that much. If you use the special charger weekly, it may work, considering your not normally draining your battery too far with a normal start on a tuned up scooter. There you go PROVE in the PUDDING, I new they were not telling the whole story. What they will say when it goes bad and you complian is that you overcharged it have a nice day. I knew it was to good to be true, just another way to sell a warehouse full that they cannot get rid of so they are now trying to push it onto the scoots and motorcycle folks(HAHA). Thanks Jerry Alleyoop Oop i'm sorry, but you're jumping to conclusions and the jury is still out. It's one thing to use them on an electric bike, it's quite another on a gas powered scoot. Let me call the folks in Sunnyvale and find out. BTW, I promise to do a long term review and post it here for all to see. If the battery works out well, I'll post the story, and if it's a stinker and leaves me stuck in the middle of nowhere I'll post that as well. Fair enough? |
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Post by alleyoop on Nov 7, 2013 2:16:02 GMT -5
I have just emailed them with questions specifically concerning the R/R charging system on the scoots.
And this right here is not the greatest news and does not give me a fuzzy feeling BRO(HAHA).
I do not think they are ready for PRIME TIME, they are close but not there. But then again like I said they probably have thousands in a warehouse building up dust so they are trying to find another means to sell them happens all the time.
Alleyoop
Straight from Shorai:
LFX™ batteries should be recharged whenever voltage drops to 13.1 volts, or sooner. If you have a vintage, custom, or off-road vehicle which has NO draw on the battery when key is OFF, then you should only need to charge your LFX™ battery once a year. However, most modern street bikes have a draw even when key is off, to support clock, computer, alarms, or other devices. This draw will eventually drain the battery, which is damaging and could void your warranty. So if you are not riding twice a month, then you should charge the battery every few weeks. “Smart” lead-acid chargers with automatic cutoff may be used for periodic charging, but will NOT work as a tender/maintainer and should be disconnected immediately after charge has finished. Older lead chargers without automatic shut-off should never be used. Improper charging is dangerous and will void your warranty. A Shorai BMS Charger - with Store Mode - is highly recommended for anyone who rides less than twice a month. Alternatively, you may disconnect the negative cable from the battery for storage, and charge once per year in that case.
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Post by spandi on Nov 7, 2013 2:22:58 GMT -5
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Post by spandi on Nov 7, 2013 2:38:40 GMT -5
I have just emailed them with questions specifically concerning the R/R charging system on the scoots. And this right here is not the greatest news and does not give me a fuzzy feeling BRO(HAHA). I do not think they are ready for PRIME TIME, they are close but not there. But then again like I said they probably have thousands in a warehouse building up dust so they are trying to find another means to sell them happens all the time. Alleyoop Straight from Shorai: LFX™ batteries should be recharged whenever voltage drops to 13.1 volts, or sooner. If you have a vintage, custom, or off-road vehicle which has NO draw on the battery when key is OFF, then you should only need to charge your LFX™ battery once a year. However, most modern street bikes have a draw even when key is off, to support clock, computer, alarms, or other devices. This draw will eventually drain the battery, which is damaging and could void your warranty. So if you are not riding twice a month, then you should charge the battery every few weeks. “Smart” lead-acid chargers with automatic cutoff may be used for periodic charging, but will NOT work as a tender/maintainer and should be disconnected immediately after charge has finished. Older lead chargers without automatic shut-off should never be used. Improper charging is dangerous and will void your warranty. A Shorai BMS Charger - with Store Mode - is highly recommended for anyone who rides less than twice a month. Alternatively, you may disconnect the negative cable from the battery for storage, and charge once per year in that case. All well and good oop, but I just told you how I wrecked a standard lead-acid battery in just the same way described. Which is why (while I'm waiting for my parts from the importer from He**) I'm putting in a very nice Cut Off Switch from the nice folks at Amazon. |
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Post by gingel on Nov 7, 2013 7:52:23 GMT -5
HAHAHAHA, but you don't need that flap right The R/R is charging it  Alleyoop I think that port is for balancing the cells once in awhile. I see people building their own LifePo4 packs ( ). some add a port so it will be possible to hook it up to a balancer. |
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Post by alleyoop on Nov 7, 2013 14:42:23 GMT -5
Yes that port is for balancing the cells and requires a special charger. You put a constant charge on those batteries that does not have a balancing feature and some cells will get overcharged and some will not get charged and that is a fact jack. We shall see, still no respond to my inquiries from anybody, wonder why  Alleyoop |
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Post by spandi on Nov 7, 2013 18:25:56 GMT -5
Ok I called the nice folks at Shorai battery, and they said there isn't an issue with it being used on a normal charging system. He said the battery will maintain it's balance when used in a standard motorcycle or scoot. The only problems that have arisen is on older bikes using generators and custom bikes. He also stated that a regular R/R unit would have no trouble maintaining the Shorai's charge without damage. So that's the story I got from Shorai.  (You can read a long term review here vvvv.) www.cycleworld.com/2012/03/30/cw-evaluation-shorai-lithium-iron-extreme-rate-lfx-battery/ |
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Post by gingel on Nov 9, 2013 4:01:57 GMT -5
What is the maximum amp the motor starter will draw? (for a 125cc scooter)
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Post by prodigit on Nov 10, 2013 17:02:24 GMT -5
It really depends, but anything with 100cca is good enough.
A regular battery for a 125 is 6A, but if I where you, I'd go with 7A.
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Post by gingel on Nov 11, 2013 14:30:24 GMT -5
Hi,
Sorry, i meant what is the max Amp Burst for a 125cc starter?
Which mean, what is the max amps that the starter will draw in those few seconds when you start the scooter?
I need connectors for the Lifepo4 battery, and i need to choose ones that can handle the Amp Burst of the starter.
Thank you.
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Post by prodigit on Nov 11, 2013 18:34:03 GMT -5
The battery should say how much cca it has.
For reference,
a 4A Li battery has ~120CCA.
a 7A Li battery has ~150CCA.
a 10A battery has ~ <300CCA.
That being said, anything that looks round about the same as the connector plugs, or stock wiring (not flimsier), will do.
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..BAD TO THE BONE..
