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Cannot upgrade gang charger

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mogman
Posts: 101
Joined: Tue Aug 05, 2008 2:25 pm

Cannot upgrade gang charger

Postby mogman » Sat Jul 15, 2017 1:26 pm

I get a flashing red light when I try to upgrade my Impres gang charger (no display) from V3.4 to V3.11 I have had no issues with the single Impres chargers and have done quite a few, tried it on several of the bays with no luck.
Also the V3.4 is OK for LI-ION yes?? If so not a big deal but read somewhere that a min. V3.9 is recommended for all charging applications.

N4KVE
Posts: 1560
Joined: Wed Apr 02, 2003 10:35 am
What radios do you own?: XTS3000/5000, TRBO, 900MHZ

Re: Cannot upgrade gang charger

Postby N4KVE » Sat Jul 15, 2017 6:05 pm

mogman wrote: read somewhere that a min. V3.9 is recommended for all charging applications.
I've heard 3.4 is good for most, but for the APX, 3.9 is preferred, especially if you leave the APX in the charger all day while the APX is on. GARY

mogman
Posts: 101
Joined: Tue Aug 05, 2008 2:25 pm

Re: Cannot upgrade gang charger

Postby mogman » Sat Jul 15, 2017 6:15 pm

Thanks, that is what I have read also, I am only charging XTSxxxx radios.

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motorola_otaku
Posts: 1729
Joined: Tue Jan 13, 2004 7:03 am
What radios do you own?: 2 turntables and a microphone

Re: Cannot upgrade gang charger

Postby motorola_otaku » Mon Jul 17, 2017 7:36 am

N4KVE wrote:... but for the APX, 3.9 is preferred, especially if you leave the APX in the charger all day while the APX is on.

3.9 does not support leaving the radio turned on in the charger. If you haven't cooked a battery yet, consider yourself lucky.

Supposedly a new firmware version (3.16 I think??) does support that... we've reached out to our reps and are waiting on word back.
When exposed to Rapid Fire Growth or Thermal Emergency, two things are lost:
1. Ability to use fine motor skills
2. Presence of mind

RFguy
Posts: 1239
Joined: Wed Dec 21, 2005 6:17 am

Re: Cannot upgrade gang charger

Postby RFguy » Mon Jul 17, 2017 10:01 am

Here's the FAQ on version 3.9 firmware

1. What’s the difference between V3.4 and V3.9?
Very Little: APX batteries are fully compatible with XTS chargers (w/inserts) with SW V3.4, therefore upgrading to V3.9 is not required. However, APX radio users leaving the radio in the “on” position will experience longer charging times. V3.9 has added SW to handle this situation if it happens occasionally. Motorola always recommends turning radio “off” when charging.

2. Can I charge APX batteries in XTS chargers with SW V3.4 using APX inserts?
Yes. APX batteries are fully compatible with XTS chargers with SW V3.4. Upgrade to V3.9 is not required.

3. I’m not using APX radios and my chargers have SW V3.4 in it. Do I have to upgrade to V3.9?
No. Upgrade to V3.9 is not required.

N4KVE
Posts: 1560
Joined: Wed Apr 02, 2003 10:35 am
What radios do you own?: XTS3000/5000, TRBO, 900MHZ

Re: Cannot upgrade gang charger

Postby N4KVE » Mon Jul 17, 2017 12:59 pm

motorola_otaku wrote:3.9 does not support leaving the radio turned on in the charger. If you haven't cooked a battery yet, consider yourself lucky.
I do not leave my radios on in a charger, but that's why 3.9 was developed. I charge my APX in a 3.4 XTS charger with the sleeve. No problems at all. GARY

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motorola_otaku
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Re: Cannot upgrade gang charger

Postby motorola_otaku » Tue Jul 18, 2017 8:01 am

We've lost probably half a dozen NNTN8092A batteries due to people leaving the radios on in the chargers, one of which was uncomfortably close to exploding. Vehicle chargers seem to be more prone to cooking the batteries due to heat buildup but we've killed a couple in SUCs too. The age and charge cycle of the battery seems to also play a factor.
When exposed to Rapid Fire Growth or Thermal Emergency, two things are lost:
1. Ability to use fine motor skills
2. Presence of mind


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