Battery little puff up- can't charge

Question

One of my EzRobot battery is dead, can't charge Do I just throw it away in the trash? What other battery can be used?

DJ Sures · Answer

Chuck it or see if there’s a battery recycle place is the best  to replace it either get one from ezrobot or you can buy one from Amazon. Any 7.4v lipo on Amazon will work

EzAng · Answer

ok 7.4 25c 1300mAh thank you

thetechguru · Answer

Your local reclycling center should collect them.  You can also drop them at best Buy or several hardware stores.  Best not to just throw away.  Lithium isn't as bad as the old NiCad batteries, but it isn't great for the environment, and it can be recycled into new batteries for a lot less cost than mining it. Alan

Jeremie · Answer

@EzAng I guess it depends on where you'll be installing the new battery, if it's back in an EZ-Robot I would recommend you purchase a new battery from us as the form factor will be the correct size (not all 7.4V 1300mAh batteries are the same). Batteries that fit are hard to come by. Otherwise, if it's for a DIY solution that doesn't need to fit in an EZ-Robot plastic shell you could get just about anything 7.4V and even increase the capacity if you'd like.

EzAng · Answer

I wanted to but the EzRobot but shipping was 25.00 to US more than the battery DJ made it sound like no problem getting a battery from Amazon - I already ordered a few

Jeremie · Answer

Hello @EzAng, that makes sense. I guess you would need to order more than just the battery to make it worth it. Yes, batteries on Amazon are prevalent but there's no guarantee on if they will fit inside an EZ-Robot. We'll have to wait and see

Nink · Answer

Just make sure you do dispose of the battery. When they puff up they can easily be punctured and if the battery gets punctured it will burst into flames.  If it is stored with other batteries they will also burst into flames. This is an extremely hot fire and the fumes are noxious.

robo rad · Answer

Ya for sure dangerous my first Lipo was 11.1 volts and wrong charger made it explode like a bomb,fire in every direction and then it launched like a missile into the wall...carpet fires and battery took an hour to put out as water does not work it needs containment with no air,hard to do while your carpet burns. Not a pretty sight,LOL! Always use a Lipo balance charger,a good one with computer display.As for going E car,look at all the chevy volts that explode in driveway,not for me,sorry New world order!

Dave Schulpius · Answer

OMG. Wow, that is eye opening.

RoboHappy · Answer

Oh yeah!  back when the lipos first came out for the model aviation industry, a couple guys I know from the club had either lost their car or their house due to lipo fires. I myself have some small packs for use on my smaller planes and yeah, even they can pack a punch if not careful. Can get a lil scaru if you have a pack that puffs up

EzAng · Answer

Thanks everyone for all the information and videos. My new batteries should be here tomorrow, I will try them out. If they don't work, maybe Jeremie can get some and I will pay him :-) Just a joke

Dave Schulpius · Answer

I may be reading this wrong but Jeremie works with EZ Robot. I think he was just saying to buy them from EZ Robot. Sorry if my presumption of your comment is wrong.

Nink · Answer

I fully understand where Jeremie is coming from and I would have said the same thing.  If you get a battery and it doesn’t fit (wrong dimensions, different connector) or worse blows up your robot (wrong voltage, connector not keyed so you reverse polarity) or even worse spontaneously combusts (internal short because of bad quality control) and you call up EZ-Robot at best you will get a "I am sorry to hear that" but if you use an ez-robot battery in an ex-robot it is guaranteed to work.  If it doesn’t they will support you.   Most DIY robot builders here understand voltage, polarity, JST connectors, C ratings etc but for the casual ez-robot user who visits synthiam forum, the "use the manufacturer recommend battery" is the way to go.

Jeremie · Answer

Thanks @Nink, That's exactly right, I know the quality, dimensions, and connections of the EZ-Robot battery but I have no idea what else is out there. Most LiPo batteries these days also come with a yellow XT type connector so switching the battery connection back to Deans would be a scary process, as you could short out the battery leads with your soldering iron. I have dealt with my fair share of puffy batteries but I have never had one catch fire or explode before. This is likely due to me taking care of the battery before anything negative happens. I know for a fact that there's no going back from a puffy battery, no matter how hard I tried to cycle charge them to bring them back. The battery chemistry is changed, oxygen fills the battery, and the capacity is quite diminished. The only thing left to do is properly dispose of the battery. I would definitely recommend as the first course of action is to bring the puffy battery to a local recycling/disposal facility. But in the case that a place like that doesn't exist in your area, the following can be done: When a LiPo puffs up it is best to drain it all the way down with a large power resistor (not too low in resistance - maybe 50-100ohms) or a 12V light bulb. You can even use the EZ-B itself by leaving it on to draw the voltage all the way down to nothing (it draws about 75-130mA depending on what you have attached). You don't want to drain it down too fast as it can still generate a ton of heat. Once the battery is depleted to 0V (test with a voltmeter) then you can short out the red and black leads. Then toss the battery in a ziplock and save it to bring it to a recycling/disposal facility in the town over the next time you visit. WARNING Never ever short the battery leads unless you are 100% confident the battery is at 0V. If you short the battery wires while it has some charge left it's likely you'll witness flames and possibly an explosion. *Edit Before you dispose of a puffy lipo, keep it stored in a flame-proof container. I use a crockpot, but there are containers and bags specifically designed for this kind of thing.

Nomad 6R · Answer

hi jeremie here's alink for the safety batt bags . baggs batt .

EzAng · Answer

I found a place to take the bad battery too next week Just to try with my IoTiny and see which one works 2S Lipo Battery Pack SYPOM 1300mAh 7.4V 25C Rc 2s Battery with T- Plug Amazon.com: 2S Lipo Battery Pack SYPOM 1300mAh 7.4V 25C Rc 2s Battery with T- Plug Softcase for arrma 4x4/FPV Racing RC Car/RC Plane/DJI Quadcopter/RC Airplane/RC Helicopter Truck Boat(2 Pack) (White 2s) : Toys & Games And LiPo Battery Pack 25C 1300 mAh 2S 7.4V with Deans Plug Amazon.com: RoaringTop LiPo Battery Pack 25C 1300 mAh 2S 7.4V with Deans Plug for RC Car Boat Truck Heli Airplane : Toys & Games Just to try with my IoTiny

thetechguru · Answer

This one fits in EZ-Robot battery compartments. Note, the first time I ordered it had the wrong connector, and Jeremie is right, it was scary soldering a DEANS connector on. (also scary having leads without a connector coming off the end of a swollen EZ-B battery. I protected the ends with heat shrink tubing before recycling). https://smile.amazon.com/gp/product/B01N082H04

The vendor sent me a couple of replacements for free with the correct connector, and I have purchased since then and they were correct.

Alan

Edit. The one's @EZang lists below this post are a significantly better price.

EzAng · Answer

These work perfect

2S Lipo Battery Pack SYPOM 1300mAh 7.4V 25C Rc 2s Battery with T- Plug Softcase for arrma 4x4/FPV Racing RC Car/RC Plane/DJI Quadcopter/RC Airplane/RC Helicopter Truck Boat(2 Pack) (White 2s)

https://www.amazon.com/dp/B07CLM4XRD?psc=1&ref=ppx_yo2_dt_b_product_details

If you need batteries, this is the correct one. I even charged it with the EZ robot charger

I had T connecters, dean, already from the past

All the same specs, you get two also

EzAng · Answer

same as thetechguru

Just received the RoaringTop LiPo Battery Pack 25C 1300 mAh 2S 7.4V with Deans Plug https://www.amazon.com/dp/B01N082H04?psc=1&ref=ppx_yo2_dt_b_product_details

$13.14 for one Charging in the EZ Charger now - will let you know how it works - it is the same size also

The other batter come with 2 batteries for 16.99 - it is a litter bigger

EzAng · Answer

Just tested it with a servo, works perfect

Just received the RoaringTop LiPo Battery Pack 25C 1300 mAh 2S 7.4V with Deans Plug https://www.amazon.com/dp/B01N082H04?psc=1&ref=ppx_yo2_dt_b_product_details

$13.14 for one Charging in the EZ Charger now - will let you know how it works - it is the same size also

same as thetechguru

robo rad · Answer

So hey Jer, you don't recommend if I Flush my other 2 small puffy Lipos down the toilet? I Guess they could explode in the pipe under the house, or light the whole sewer on fire, be like the Ukraine conflict under the street.xD

Jeremie · Answer

0/10 would NOT recommend!  The world is on edge, we don't need any loud bangs setting something into motion

robo rad · Answer

HA I Know first hand that  Lipo fire eats water for breakfast! May as well be lighter Fluid, LoL!

EzAng · Answer

No bangs here yet, :-(

After testing both batteries, I found out they both are good replacements. (No shipping charge)

I going with the 2S Lipo Battery Pack SYPOM 1300mAh 7.4V 25C Rc 2s Battery with T- Plug Softcase for arrma 4x4/FPV Racing RC Car/RC Plane/DJI Quadcopter/RC Airplane/RC Helicopter Truck Boat(2 Pack) (White 2s) you get 2 batteries

https://www.amazon.com/dp/B07CLM4XRD?psc=1&ref=ppx_yo2_dt_b_product_details

If you prefer is the same size as the EzBattery, then: the the RoaringTop LiPo Battery Pack 25C 1300 mAh 2S 7.4V with Deans Plug https://www.amazon.com/dp/B01N082H04?psc=1&ref=ppx_yo2_dt_b_product_details

same as thetechguru

Nink · Answer

Now we just need to install a Sodium or Potassium Ion battery and drive your Roli into the ocean.  I am sure it won't void the warranty.

EzAng

Battery Little Puff Up- Can't Charge

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