NEW: iPower AA batteries. Li-poly rechargeable.

[Johnny Karlsson]

2 hours ago, RadoStefanov said:

To calculate the run time we are comparing the same devices at the same draw right?

 

Same device (SMV) : yes.

Different battery designs = same draw : no.

 

Read Larry's post above. the SMV design allows it to run at full power, even when the AA has only 0.9V left, but in order to compensate for the low voltage, the transmitter draws "upwards of 0.6 Amps" at that voltage. Not sure what the current draw is at a full 1.5V (Larry?). And because this lithium AA stays at a constant 1.5V until it dies.... you get it.

[RadoStefanov]

19 minutes ago, Johnny Karlsson said:

 

Same device (SMV) : yes.

Different battery designs = same draw : no.

 

Read Larry's post above. the SMV design allows it to run at full power, even when the AA has only 0.9V left, but in order to compensate for the low voltage, the transmitter draws "upwards of 0.6 Amps" at that voltage. Not sure what the current draw is at a full 1.5V (Larry?). And because this lithium AA stays at a constant 1.5V until it dies.... you get it.

So it is not the battery but the transmitter design.

And in this scenario NIMH will have a better run time considering the higher mAh and the way lectrosonics draws less when voltage is lower.

You can also decrease your RF power to extend your run time. Still nothing to do with the battery.

[Johnny Karlsson]

24 minutes ago, RadoStefanov said:

So it is not the battery but the transmitter design.

And in this scenario NIMH will have a better run time considering the higher mAh and the way lectrosonics draws less when voltage is lower.

You can also decrease your RF power to extend your run time. Still nothing to do with the battery.

You have that backwards. The transmitter draws more current at a lower voltage. And for real runtimes, there was no significant difference in the tests I did.

 

Feel free to believe me or not, or run your own tests. I'm done with this topic. I just wanted to share my findings for anyone who cares. Not here to "win" an argument. Cheers !

[RadoStefanov]

And besides: Not knowing your battery is about to die immediately disqualifies this battery.

[MartinTheMixer]

57 minutes ago, RadoStefanov said:

So it is not the battery but the transmitter design.

And in this scenario NIMH will have a better run time considering the higher mAh and the way lectrosonics draws less when voltage is lower.

You can also decrease your RF power to extend your run time. Still nothing to do with the battery.

The way it "draws less when voltage is lower", less what? 

47 minutes ago, Johnny Karlsson said:

You have that backwards. The transmitter draws more current at a lower voltage. And for real runtimes, there was no significant difference in the tests I did.

 

Feel free to believe me or not, or run your own tests. I'm done with this topic. I just wanted to share my findings for anyone who cares. Not here to "win" an argument. Cheers !

I didn't know there was an argument. That shows how little I know. 

[MartinTheMixer]

3 hours ago, RadoStefanov said:

And besides: Not knowing your battery is about to die immediately disqualifies this battery.

When I use the micro USB rechargeables, I think mine are a different brand, I just change the erx batteries every 15 hours. 

[Johnny Karlsson]

I'll add one more last thing: I do absolutely NOT recommend these for use in a Lectro Tx.

 

I rolled on the last test and just spot checked it. There were loud pops intermittently towards the end of the file. Pop, then dead silence. Then it would come back on again. Then POP again. On and off a few times, so that would mean usable run-time is likely about 4h. After that it would be scary. I'm guessing this has to do with what Larry mentioned (the switching power supplies trying to figure out what to do with each other once the voltage starts dropping).

 

So meh - sticking to my eneloops.

[MartinTheMixer]

5 minutes ago, Johnny Karlsson said:

I'll add one more last thing: I do absolutely NOT recommend these for use in a Lectro Tx.

 

I rolled on the last test and just spot checked it. There were loud pops intermittently towards the end of the file. Pop, then dead silence. Then it would come back on again. Then POP again. On and off a few times, so that would mean usable run-time is likely about 4h. After that it would be scary. I'm guessing this has to do with what Larry mentioned (the switching power supplies trying to figure out what to do with each other once the voltage starts dropping).

 

So meh - sticking to my eneloops.

I believe what your referring to is the cutoff protection in the cell itself.  This can be tested. 

[Boomboom]

Reviving this thread ... anybody already tried these new ones from iPower ? 3008mAh and there is an 8-bay charger.

The batteries are expensive, but the charger's got quite a good price that kind of balances it all.

 

iPower iPowerMax AA3610 1.5V AA LiPo Rechargeable AA3610 B&H (bhphotovideo.com)

 

iPower iPowerMAX AACU8 8-Battery LiPo Charger for AA3610 AACU8 (bhphotovideo.com)

 

[RadoStefanov]

2 hours ago, Boomboom said:

Reviving this thread ... anybody already tried these new ones from iPower ? 3008mAh and there is an 8-bay charger.

The batteries are expensive, but the charger's got quite a good price that kind of balances it all.

 

iPower iPowerMax AA3610 1.5V AA LiPo Rechargeable AA3610 B&H (bhphotovideo.com)

 

iPower iPowerMAX AACU8 8-Battery LiPo Charger for AA3610 AACU8 (bhphotovideo.com)

 

 

Specs look ok but the life span is very basic general statement.

If specs are true might give you 10-15% more run time compared to Elenelop Black.

Still not worth it considering the lack of warning when they die. 

But maybe they can last longer.

 

Try them and let us know. 

[r.paterson]

19 hours ago, Boomboom said:

Reviving this thread ... anybody already tried these new ones from iPower ? 3008mAh and there is an 8-bay charger.

The batteries are expensive, but the charger's got quite a good price that kind of balances it all.

 

iPower iPowerMax AA3610 1.5V AA LiPo Rechargeable AA3610 B&H (bhphotovideo.com)

 

iPower iPowerMAX AACU8 8-Battery LiPo Charger for AA3610 AACU8 (bhphotovideo.com)

 

Yes I use them all the time exact same run time as eneloop pro black  to the minute, not any longer, however I use them for the weight factor, especially on boom plug in etc, I akways change batts at lunchtime etc so I never get near the end run time on my lectro tx's.. I don't use them in single batt lectro tx, I still use energizer lith aa for run time with them. 

[Adam Pressley]

This sounds worth it for the weight. How long have you been using them for?

[r.paterson]

1 hour ago, Adam Pressley said:

This sounds worth it for the weight. How long have you been using them for?

About 18 months.. 

 

[RadoStefanov]

9 hours ago, r.paterson said:

Yes I use them all the time exact same run time as eneloop pro black  to the minute, not any longer, however I use them for the weight factor, especially on boom plug in etc, I akways change batts at lunchtime etc so I never get near the end run time on my lectro tx's.. I don't use them in single batt lectro tx, I still use energizer lith aa for run time with them. 

 

What kind of transmitters do you use them in? 

[Nick Ray Harris]

I've had issues with Lectro HM transmitters and these, they'll deplete one of the batteries and then shut down..

[r.paterson]

5 hours ago, RadoStefanov said:

 

What kind of transmitters do you use them in? 

SMDB and Dbu

[RadoStefanov]

56 minutes ago, r.paterson said:

SMDB and Dbu

oh yeah those are a brick.

5 hours ago, Nick Ray Harris said:

I've had issues with Lectro HM transmitters and these, they'll deplete one of the batteries and then shut down..

not interested to reinvent the wheel.

eneloop black and lithium disposable when I need the extra run time which is never’

[Boomboom]

1 hour ago, RadoStefanov said:

oh yeah those are a brick.

not interested to reinvent the wheel.

eneloop black and lithium disposable when I need the extra run time which is never’

 

That'll be my motto here too. Same ol' same ol' ... 😄

Thanks for the comments for this ''updated'' thread !