Lithium batteries

Lithium batteries

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  #11  
Old 04-07-2016, 04:45 AM
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jimbo2012 jimbo2012 is offline
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Originally Posted by mulligan View Post
Aren't those the ones that explode ??
Before I start into some facts, I find this question somewhat funny coming from people who have been sitting on top of tank of liquid gasoline as they travel down the road. It is highly flammable and can explode if the conditions are right.

What if a gas golf cart was hit by car?


If your gas tank is punctured it is sure to spill all over the ground and create an even bigger hazard. In a report from 2005 over 266,000 gasoline related car fires killed over 566 people. So with that said, I will begin to approach the subject of the dangers of lithium ion fires.

The metal lithium is highly flammable and burns very hot.
But lithium ion cells like those use in most electric cars these days do not actually contain metallic lithium.

So not the same issue with these batteries.

Rechargeable, lithium ion cells utilize lithium ions that are intercalated into graphite, lithium metal oxides and/or lithium salts.

There is no metallic lithium in a lithium ion battery.

This means that they are much more stable than many of the earlier non-rechargeable lithium batteries which did contain metallic lithium.

One big safety factor in this is that you can use standard ABC fire extinguishers or water to put out a lithium ion battery fire.

It is in the charging process that they may be vulnerable.
If you over charge a lithium ion cell the cells will expand and become very hot.
If over charged to much, this heat will build up and cause the cell to ignite.
During the normal charging process the cells should not become hot.

This is why it is very important to have some kind of monitoring system hooked up to the cells while they are being charged to make sure that the charger shuts off automatically when they reach a fully charged state or if the cells become hot.

All of our systems have a State of the Art Battery Management system.


last point we are not using 4 large 12 volt battery packs to make 48 volts

We use 15 3.2volt batteries to get 48 volts,

so if there was a problem the battery mass is significantly smaller to cause damage.

A gas can in your garage offers a greater risk perhaps.


The way the battery charger works when plugged into you homes power automatically disconnects from the battery pack when full charge is reached.

they can't overcharge.


.

  #12  
Old 04-07-2016, 05:37 AM
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Got it Thanks
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  #13  
Old 04-07-2016, 09:44 PM
Kahuna32162 Kahuna32162 is offline
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Jimbo, congrats on your new association with the Lithium battery folks. As one of the first to have converted from a lead based battery system to Lithium Ion power cells, I can't say how happy I am on the performance and the increased range I have on a single charge. I only wish I had had waited a couple of months to take advantage of your discounted pricing.

I was unaware of the solar discount on my taxes and am having my account looking into it to see if it's worth while to re file my 2015 returns. I would be happy to join you at your Town Square gatherings to show off what I have and talk about the advantages to anyone who might be interested. Please PM me about dates and times. This is the cart of the future and you are on the cutting edge.
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  #14  
Old 04-08-2016, 07:08 AM
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You must install the solar at that same time as the batteries on the same invoice.

But speak to your accountant to be sure

Thanks for your support



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  #15  
Old 04-08-2016, 08:03 AM
Carla B Carla B is offline
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We met a painting contractor who just joined the RC Flying Club that my husband belongs to. A few Saturdays ago he left the small lithium batteries that power model airplanes on charge while he and his family went to breakfast. He said the batteries felt "warm" but didn't think anything about it. Something went wrong and the house caught fire shortly after they had gone. My husband charges his lithium batteries in a sturdy metal container and only while he is at home and awake. So far so good.

Last edited by Carla B; 04-08-2016 at 08:15 AM. Reason: Spell ck
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  #16  
Old 04-08-2016, 08:43 AM
junction29 junction29 is online now
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Quote:
Originally Posted by jimbo2012 View Post
You must install the solar at that same time as the batteries on the same invoice.

But speak to your accountant to be sure

Thanks for your support



.
Congratulations Bob,
Once again you are leading the field and very reasonably priced as well.
Good luck with your new venture
  #17  
Old 04-08-2016, 09:56 AM
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Jim sent you a pm.
  #18  
Old 04-08-2016, 10:44 AM
Uberschaf Uberschaf is offline
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The lithium ion polymer batteries are what RC units use and they have a danger of catching fire.
  #19  
Old 04-08-2016, 11:13 AM
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Quote:
Originally Posted by Carla B View Post
We met a painting contractor who just joined the RC Flying Club that my husband belongs to. A few Saturdays ago he left the small lithium batteries that power model airplanes on charge while he and his family went to breakfast. He said the batteries felt "warm" but didn't think anything about it. Something went wrong and the house caught fire shortly after they had gone. My husband charges his lithium batteries in a sturdy metal container and only while he is at home and awake. So far so good.
I also sail model boats and use them, but you need to put thing in perspective, those are not built the same.

But more importantly they are not charged with a $1500 battery management system. they are charge with a $40 charger.


.While I understand your concern, that concern is not present herein.
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  #20  
Old 04-11-2016, 05:40 AM
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Lightbulb

Ok, I'm going top be at Brownwood, this Wednesday the 13th between 1-3pm.

Should be EZ to spot the only cart with a panel.

Hope to see those of you interested there.

I also have more info on the lithium batteries.

For any of you that are serious I will have some incentives ($$) for the first two buyers.



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