• To anyone looking to acquire commercial radio programming software:

    Please do not make requests for copies of radio programming software which is sold (or was sold) by the manufacturer for any monetary value. All requests will be deleted and a forum infraction issued. Making a request such as this is attempting to engage in software piracy and this forum cannot be involved or associated with this activity. The same goes for any private transaction via Private Message. Even if you attempt to engage in this activity in PM's we will still enforce the forum rules. Your PM's are not private and the administration has the right to read them if there's a hint to criminal activity.

    If you are having trouble legally obtaining software please state so. We do not want any hurt feelings when your vague post is mistaken for a free request. It is YOUR responsibility to properly word your request.

    To obtain Motorola software see the Sticky in the Motorola forum.

    The various other vendors often permit their dealers to sell the software online (i.e., Kenwood). Please use Google or some other search engine to find a dealer that sells the software. Typically each series or individual radio requires its own software package. Often the Kenwood software is less than $100 so don't be a cheapskate; just purchase it.

    For M/A Com/Harris/GE, etc: there are two software packages that program all current and past radios. One package is for conventional programming and the other for trunked programming. The trunked package is in upwards of $2,500. The conventional package is more reasonable though is still several hundred dollars. The benefit is you do not need multiple versions for each radio (unlike Motorola).

    This is a large and very visible forum. We cannot jeopardize the ability to provide the RadioReference services by allowing this activity to occur. Please respect this.
  • Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

Battery HOT while charging. Normal?

Status
Not open for further replies.

photoguy2

Member
Joined
Apr 3, 2013
Messages
125
Hi, all, just a quick question. I just bought a lot of 6 NI-MH aftermarket (IMAX_EXPERT) batteries for the Jedi. I am trying to charge them in a NTN8831A Tri-Chem charger.

I know that the charger works fine (At lest with Ni-CD Jedi and Saber batteries). The issue is that the NI-MH batteries are getting VERY hot. Right now I actually have a band-aid on my finger with some burn gel from one of the charging contacts on the back of the battery. That was when I decided to stop charging them and ask here ;-)

They ARE charging, Right now I am listening to county fire/EMS on a MT2000 with one I already charged, and they were almost DOA, so I know they are charging, it just seems a bit strange they are this hot.

Is it normal for NI-MH batteries to get this hot?

Thanks
Matt
KJ6PNN
 
Last edited:

jpc3

Member
Premium Subscriber
Joined
Dec 16, 2007
Messages
2
Location
Chattanooga
John Creel, ENG/SNG Tech @ WRCB-TV3

I think this charger was designed for Motorola or Equivalent batteries that are Ni-CAD or Ni-MH. I believe the charging strategy for Lithium Ion batteries is different than Ni-CAD or Ni-MH. Hot batteries are usually the result of them being charged too quickly.
 

mmckenna

Well Known Member
Joined
Jul 27, 2005
Messages
10,461
Location
SNCZCA01DS0
Those chargers are a Tri-chemistry charger and work fine for Ni-MH batteries. I used to run about 300 MTS2000s and we had a bunch of those and used Ni-MH batteries without issue.

What I'd suspect is more likely the issue is the battery itself. Looking at that brand on e-Bay, the price is really low, about a quarter of what I was paying for Ni-MH batteries from Motorola and other manufacturers. Based on that, I'd be more suspect of the battery itself. Poor contact design, internal wiring, cells, etc could all result in heating. Prices that low suggest that they've gone cheap somewhere.

Some battery warmth is normal when they are charging, but physically burning yourself is a very bad sign.
 

photoguy2

Member
Joined
Apr 3, 2013
Messages
125
The plot thickens ;-).

On a whim I just tried the batteries in a aftermarket(empire wireless I think) Jedi only rapid charger. No heat buildup. They charged in the same amount of time too.

My recollection is that the OEM charger is a impres charger. Maybe that circuitry is causing that batteries to heat up?

Oh well, at least I can charge them in that charger. We will see what happens when I put them on the act I6 conditioning charger I have in the mail.

Matt
KJ6PNN
 

mmckenna

Well Known Member
Joined
Jul 27, 2005
Messages
10,461
Location
SNCZCA01DS0
That isn't an Impres charger. Even if it was, they are not Impres batteries, so it wouldn't figure into this.

The difference in the chargers may have to do with the rates at which they charge. In other words, the amount of current sent to the battery may vary depending on the model of charger. Not all batteries can handle being quick charged like the Motorola charger you have will. Your other charger might charge at a slower rate/less current, resulting in less heat build up.

Either way, sounds like you have a solution.
 
Status
Not open for further replies.
Top