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05-17-2017, 08:05 AM | #11 |
Gone Wild
Join Date: Sep 2009
Location: Maryland
Posts: 568
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lithium battery questions
When I ordered my pack from evbattery I had Nick include everything I needed. Cable set with Anderson connector connected to the pack. Then another cable set with Anderson connector that I connected to the solenoid and controller.
Couple of pics in my build thread page 3 post #58 http://www.buggiesgonewild.com/elect...project-6.html |
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05-17-2017, 10:59 AM | #12 | |
Gone Wild
Join Date: Apr 2015
Location: NorCal
Posts: 708
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Re: lithium battery questions
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05-17-2017, 05:02 PM | #13 | |
Not Yet Wild
Join Date: Mar 2012
Posts: 48
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Re: lithium battery questions
Quote:
As far as built in protection, all depends on the manufacture. I know that lipo's in general have no such protection. You pull more than the battery can handle it heats up.. will "Puff" up and explode if given to much abuse. Wanna see the power locked in a lipo YouTube it... very dangerous. But the main thing that I want to know in this is how they balance the pack out? How large the ESC is, and when in the world are they gonna bring out kick butt brushless motors for us in golf carts!! Lipo's rock..... but brushless motors are where the real power is gained! The main gain you get from Lipos is weight loss. The main gain you get from brushless is MO POWA!! Lol plus much higher efficiency!! |
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05-17-2017, 05:44 PM | #14 |
Gone Wild
Join Date: Jul 2010
Location: Peachtree City, Ga.
Posts: 2,759
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Re: lithium battery questions
Brushless motors in EZGO RXV since 2008. Yamaha since 2016.
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05-17-2017, 09:00 PM | #15 | |
Gone Wild
Join Date: Sep 2009
Location: Maryland
Posts: 568
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Re: lithium battery questions
Quote:
I'm no battery expert but what kind of rc battery do you run in your rc plane? My sons and I race RC 1/10 buggies. We run brushless motors and batteries that are 11.1v 5000mah lipo packs and they are only 30c. Not sure we can compare little rc packs to bigger 48v+ packs... |
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05-17-2017, 09:06 PM | #16 | |
Gone Wild
Join Date: Sep 2009
Location: Maryland
Posts: 568
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Re: lithium battery questions
Quote:
No batteries have built in protection. Our little rc vehicles can be equipped with ESCs that can protect our lipo packs. The bigger lipo packs for the golf carts can be equipped with a BMS that protects the pack from over discharging and over charging. |
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05-18-2017, 03:52 PM | #17 |
Flat Out Hooked on Carts
Join Date: Nov 2011
Location: Miami, Florida
Posts: 1,115
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Re: lithium battery questions
The ESC's in RC applications only prevent the vehicle from continuing to run so that the lipo pack doesn't go below critical voltage. Once the pack is discharged too far it can be damaged sometimes to the point of no return. The real protection in RC is in the charging system, which balance charges each individual cell so that no one cell overcharges and causes the puffiness and fire you see on YouTube, similar to the BMS systems for EV's and here in golf cart applications. Just make sure the controller is programmed to cut off at a certain voltage recommended by the manufacturer with some "fluff" added to it and the BMS wired in correctly and you should have something that is safer than flooded lead acid.
Curious about the amperage draw question, though. |
05-18-2017, 03:56 PM | #18 | |
Not Yet Wild
Join Date: Mar 2012
Posts: 48
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Re: lithium battery questions
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LIPO batteries are one in the same. Period. If it's a lithium cell, not a life or li poly, then yes. They are the same. Size doesn't matter at all. |
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05-18-2017, 04:00 PM | #19 | |
Not Yet Wild
Join Date: Mar 2012
Posts: 48
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Re: lithium battery questions
Quote:
Ok, so the BMS stands for what? Is it some kind of esc or Bec ? Thanks for agreeing with the same statement I made in your quote. |
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05-18-2017, 04:03 PM | #20 | |
Not Yet Wild
Join Date: Mar 2012
Posts: 48
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Re: lithium battery questions
Quote:
Great! Thank you!! So this BMS is basically s ESC with another name then, ok good. Then as to the question asked earlier about the max amp draw.... it will be limited by whatever the amp rating of the BMS is. No matter anything else in the circuit. Just like if you max out the motor but still have the stock controller. |
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