Search found 57 matches: charging LiFePO4

Searched query: +charging +LiFePO4

by Bitmaximus
Sep 21, 2017 1:18 pm
Forum: Battery Technology
Topic: LiFePO4 battery packs in series (Discharging and Charging)
Replies: 5
Views: 240

LiFePO4 battery packs in series (Discharging and Charging)

... of the BMSs cuts out due to it's LVC, and a BMS "sees" the full 36V due to this. (and diodes across each pack can prevent this from happening - Charging the packs in series is not safe (For a reason I don't know or understand, I assume it has to do with cell balancing) So, to complicate matters ...
by =BicycleRider=
Jul 22, 2016 1:22 am
Forum: E-Bike General Discussion
Topic: Impossible? Lifepo4 charging with small solar panel?
Replies: 1
Views: 236

Impossible? Lifepo4 charging with small solar panel?

I am thinking of getting an ebike kit in the future and I just wanted to ask, say if you go on a long trip and the battery goes flat, is there no way to unroll a 50 - 100w solar panel and add some more charge to the battery over a couple of hours for instance? I have asked about this with lipos for ...
by dventu
Jul 20, 2016 9:15 pm
Forum: Battery Technology
Topic: Lifepo4 charging
Replies: 1
Views: 161

Lifepo4 charging

So I have a 48v lithium pack that peaks at 58.7. Then I have a 48v lead acid charger that is adjustable on voltage. I heard even if I adjust the voltages to 58v the charger will cook the battery. The person says that lead acid charger pulsates causing it to burn the battery. Can i get some experts h...
by energyi
Jun 18, 2016 11:43 am
Forum: E-Bike General Discussion
Topic: Voltage limit LiFePO4 charging
Replies: 3
Views: 287

Voltage limit LiFePO4 charging

... watts at 48 volts (open-circuit voltage is ~80), and want to charge my LiFePO4 20 amp-hour battery which tops out at a 58 volt limit charging. A charge controller could be used for my needs to optimize the battery. The solar ...
by perra
Mar 17, 2016 3:58 am
Forum: Battery Technology
Topic: Lifepo4 40AH stops charging
Replies: 24
Views: 876

Lifepo4 40AH stops charging

My Lifepo4 40Ah/48V/Bms has worked fine for 2.5 years. But now all of sudden it stops charging after only 3 minutes, even when the battery is empty. Is battery already old and finished, or is it fixable somehow? Any ideas are welcomed. I have tested two chargers, same result :(
by Fastolfe
Dec 31, 2015 5:04 pm
Forum: E-Bike Technical
Topic: Charging a LiFePo4 battery while using the motor?
Replies: 12
Views: 844

Charging a LiFePo4 battery while using the motor?

... ahead with my project. Okay so the question is this: can you charge a LiFePo4 battery pack while at the same time using the motor? Or in other ... Also, if the controller is indeed a CC source (at least for part of its charging cycle), it stands to reason that if the motor is pulling amps, the ...
by markz
Nov 19, 2015 6:41 pm
Forum: Battery Technology
Topic: Battery Charging Question: LiFePO4 and Li-Ion
Replies: 3
Views: 348

Battery Charging Question: LiFePO4 and Li-Ion

... see if its rationale. I just want to save $60 in buying a 2nd charger. LiFePO4 and Li-Ion chargers; Can one be used with the other, if the end voltages are close? Or is there a specific charging pattern that goes on with each charger for different chemistries. Example ...
by kuivati
May 23, 2015 1:41 pm
Forum: Battery Technology
Topic: Charging LiFePO4 with laboratory power supply
Replies: 4
Views: 372

Charging LiFePO4 with laboratory power supply

Hello! I plan to use laboratory power supply for charging 20Ah previously balanced LiFePO4 battery pack. I am going to charge battery pack at 43,2V 10A and this laboratory supply has ...
by RustyKipper
May 14, 2015 3:42 am
Forum: Battery Technology
Topic: Solar charging lifepo4
Replies: 4
Views: 368

Solar charging lifepo4

Morning chaps, I'm looking for a more efficient way of charging my 9Ah E-bike battery from my solar shed. Currently I have a 180W panel charging a 110A lead acid battery in the day that in turn powers a Victron 1200W sine wave inverter powering the ...
by Ktraughb
Apr 10, 2015 3:04 pm
Forum: Battery Technology
Topic: Testing LiFePo4 charging without bms
Replies: 1
Views: 424

Testing LiFePo4 charging without bms

I am going to do a very controlled test on a 12v system of charging a 4s1p setup of CALB 40ah cells. I actually want to test this with the possibility of alternator charging (in parallel to an agm battery). I am well aware there are commercially available ...
by imorton
Jul 25, 2014 3:00 pm
Forum: Battery Technology
Topic: Fast Charging: parallel two chargers on 48v LifePo4 battery
Replies: 21
Views: 1198

Fast Charging: parallel two chargers on 48v LifePo4 battery

... "Y harness" to be able to parallel the charger outputs to achieve twice the charge speed….? So my battery/charger gurus, can two of these 48v 3amp LifePo4 chargers be paralleled to get faster charge times? Thanks for sharing your charger wisdom, IAN.. :)
by OCD
Jun 24, 2014 7:28 pm
Forum: E-Bike Technical
Topic: LiFePo4 off gassing during charging
Replies: 8
Views: 464

LiFePo4 off gassing during charging

... now, had to change the BMS once about a year ago due to a burnt connector on the BMS plug. Lately, I have been noticing an electronic smell when charging the battery. Not an alarming, choking you odor, but a "wouldn't leave it under my desk at work to charge" smell. I'm using the same motor, ...
by joshseitz
May 16, 2014 10:26 pm
Forum: Battery Technology
Topic: Charging 14S NCM pack with 16S LiFePO4 Charger
Replies: 2
Views: 220

Charging 14S NCM pack with 16S LiFePO4 Charger

I am transitioning to a new 14S 14Ah LiNCM pack from my trusty old Ping 16S 20Ah boat anchor. Since the charging voltage is so close (58.8V for 14S NCM; 60-61V for 16S LiFe) is it possible to re-purpose my two LiFe chargers? Can charge voltage be adjusted down to 58.8V? Are ...
by evolution9
Apr 29, 2014 2:12 am
Forum: Battery Technology
Topic: 48V LiFePo4 parallel charging
Replies: 0
Views: 158

48V LiFePo4 parallel charging

If i hook up 2 48V 10AH LiFePo4 batteries in parallel.... can I hook two 2.5A 48V lifepo4 chargers in parallel to charge them?
by milesinfront
Apr 28, 2014 12:45 am
Forum: Battery Technology
Topic: Strange Lifepo4 charging problem...
Replies: 10
Views: 862

Strange Lifepo4 charging problem...

... http://www.motorcycle.com/images/news/122210-ballistic-evo-2-lithium-ferro-batteries.jpg Mine's the large 4S4P configuration. I am balance charging only (fitted to total loss racing car) with a TP1430c. First 6 or so charges were fine. (only discharged by about 20%) But now one of the cells ...
by Ebikebert
Dec 19, 2013 1:02 pm
Forum: E-Bike Technical
Topic: Charging options for 24s lifepo4 battery
Replies: 5
Views: 285

Charging options for 24s lifepo4 battery

I just recently bought 8 of these lifepo4 batteries from hobbyking- http://hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=23684 ... for their price. I bought a switching power supply the same as this one for charging my batteries. I have already confirmed that the power supply can produce ...
by dilkes
Dec 08, 2013 3:15 pm
Forum: Battery Technology
Topic: Charging 14ah LiFePO4 Pack
Replies: 2
Views: 171

Charging 14ah LiFePO4 Pack

What's the opinion on the advisability of charging a 48V 14Ah LiFePO4 pack using a 6 amp charger? It's a bigger charger than I have been using and just wondering if that's charging the pack too quickly. Same question for a 2nd pack I have - also 48V, but 10Ah.
by sixty_cycle_hum
Nov 09, 2013 8:11 pm
Forum: Battery Technology
Topic: LiFePO4 charging and BMS question - can someone explain?
Replies: 3
Views: 501

LiFePO4 charging and BMS question - can someone explain?

... that it's a great emergency power source. It's a Goldenmotor 15Ah 16S LiFePO4 pack (actually just uses headway cells - not sure about who makes ... version. For the TLDR people: Is my BMS smart enough to take care of charging from a constant voltage source, also... can I simultaneously draw ...
by unclejemima
Nov 03, 2013 11:32 pm
Forum: Battery Technology
Topic: Charging a LIFEPO4 battery to fast?
Replies: 5
Views: 583

Charging a LIFEPO4 battery to fast?

I'm looking to purchase a 48V 20AH battery from a seller in China. The battery uses Use 38120 Power Cells.

He has the option for a fast charger 10AH for an extra $90.

Can I damage my battery by charging it to fast? Would it last longer if I use only the standard 5AH charger?

Thanks,
by nukezero
Sep 26, 2013 3:39 pm
Forum: Battery Technology
Topic: Problem with 36V 15Ah LifePo4 pack not charging completely
Replies: 49
Views: 3330

Problem with 36V 15Ah LifePo4 pack not charging completely

So we got this new 36V 15Ah LifePo4 pack from Sunthing28 on ebay. The charger puts out 45.2V. The problem is that ... only get a range of about 5 miles before the battery hits LVC. After one hour of charging, the battery goes back up to 39V. The battery pack has been cycled for 3 days ...
by legerme1955
Sep 03, 2013 7:43 am
Forum: Battery Technology
Topic: lifepo4, A123 pulse charging
Replies: 3
Views: 450

lifepo4, A123 pulse charging

Hi , i´ve been using 12 amp charging for mi 48v 20 amp battery pack A123 but one year ago i rod is possible to charge them with pulse tecnologiy, does any body know how? , mi charger gives pulse charging output but i prefer to talk with somebody who knows about, Thanks
by imorton
Aug 26, 2013 11:59 am
Forum: Battery Technology
Topic: Opportunity charging of Headway 9Ah LifePo4 pack
Replies: 17
Views: 1698

Opportunity charging of Headway 9Ah LifePo4 pack

... I have received here. I am now contemplating buying the 48v 9Ah headway LifePo4 battery pack from BMSBattery.com As my budget is limited, I figure ... 6amp) so that I could quickly recharge the battery via "opportunity charging". I also have a 2a SLA charger for use at home were time is not ...
by EbikeWizard
Oct 24, 2012 1:27 pm
Forum: Items Wanted
Topic: solar system for charging lifepo4
Replies: 10
Views: 776

solar system for charging lifepo4

i need a solar panel system that i can plug my lifepo4 charger into at night. that means it would have to build up energy in the daytime and store enough for me to run my charger all night the battery i need to charge is 48v 15ah i have a few spare ...
by EbikeWizard
Oct 24, 2012 1:07 pm
Forum: Battery Technology
Topic: power surges charging Lifepo4
Replies: 7
Views: 277

power surges charging Lifepo4

... at a house on a farm that gets power surges because the meterbase and ground wire to the house have not yet been replaced. i need to know if a lifepo4 battery and charger can take a power surge without frying anything. if it will fry it, im thinking about gettign solar panels and using the ...
by evalon
Oct 17, 2012 8:18 am
Forum: Battery Technology
Topic: Float charging LiFePO4 batteries + analog BMS system?
Replies: 9
Views: 1532

Float charging LiFePO4 batteries + analog BMS system?

Hi All, I'm considering float charging a series of 6 LiFePO4 batteries (3.45 VDC/cell with balancing, vs 3.6 VDC full charge voltage) on a continuous basis, ...