9v pp3 rechargeable battery recommendation please?

[Parrot of Doom]

Hi there

I go through 9v pp3 batteries like the plague through a medieval city, and it isn't cheap. I'm told that li-ion 9v batteries are now available, and are quite long-lasting and reliable compared to older rechargeable varieties.

I use them for my work in television, powering body-worn radio transmitters (http://www.posthorn.com/Audio_2.html). I wonder if anyone could recommend a website, or particular brand, of battery and charger, that I might buy?

I'd only need about 5 batteries. A typical Duracell might last me about 6-7 hours, I'd like about the same capacity from a rechargeable, or more if possible.

 

[Bones]

BatteryJunction carries two variations of the iPowerUS 9 volt lithium battery, along with their charger:

http://www.batteryjunction.com/ipowerus-9v-500.html

ThomasDistributing, another major battery vendor, carries the same brand, but their prices are higher:

http://www.thomasdistributing.com/shop/ipower-9-volt-500mah-lithium

I haven't had any experience with this battery, but both these vendors are very reputable, and there's a purchaser's review at BatteryJunction that's very positive.

 

[Parrot of Doom]

That's exactly what I'm looking for. Richmond Film Services appear to sell the same kit in the UK, so I'm going to contact them on Monday.

Thanks very much for your help. There are plenty of batts available, the trouble is you never know what's good and bad until you ask!

 

[WDG]

I can highly recommend both the iPower Li-Polymer 9v and Thomas Distributing. I've used the 500mAh version in hand mics, with absolutely no issues at all, though generally not for the length of time you have yours on.

Here is the iPower site: http://www.ipowerus.com/ You'll notice they also have a 520mAh version specifically for television use. I have no experience with the 520.

Thomas carries both the batteries and special Li-Poly charger. Don't let anyone charge these on a NiMh 9v charger.

 

[balou]

<rant>

It's a shame that vendors still sell products using PP3 batteries.

A little historical reminder: they were introduced in 1956, to make miniature transistor radios possible. Unlike today, those early transistorized products really needed such a high voltage, and switch mode power supplies weren't feasible (without the miniaturizing seen today, they'd have been larger than the radio itself).

But today... why the hell not implement a simple boost circuit? Two AAs hold much more energy than a PP3 battery.
Especially if you sell your product for >1000$

Oh and I mean you too, manufacturers of guitar effects controllers. C'mon... a 9V battery and a 7805 linear regulator? How sad and inefficient is that?

</rant>

 

[Parrot of Doom]

I think for the transmitters I use, a single battery solution is more practical than the alternative, which would be two or more batteries.

 

[Benson]

I think for the transmitters I use, a single battery solution is more practical than the alternative, which would be two or more batteries.

Well, there's always CRV3, totally thrashing the PP3 again (it's essentially two Lithium AAs side-by-side.

 

[Parrot of Doom]

Ordered today, 4 520mah batts and a charger. Total cost slightly less than £100 sterling.

Thanks for the advice!

 

[Frank E]

Ordered today, 4 520mah batts and a charger. Total cost slightly less than £100 sterling.

Thanks for the advice!

:thumbsup:
Ditto.
Ordered from Richmond Film Services in the UK.

 

[WDG]

Ordered today, 4 520mah batts and a charger.

Now that you've had a chance to use these a while, how are you getting along with them? Like them/dislike them?