Safe to use rechargable 9 volts?

[bb_maine]

Hey all - wondering if anyone knows if its safe to use a rechargable like this in my Delta: http://www.amazon.com/Energizer-NH22BP-9-Volt-Rechargeable-Battery/dp/B00000JGN9 I lost the manual, but I thought I recalled it saying something about only using a specific type of battery... Any advice appreciated, especially if you know of a rechargable that you use and trust! Thanks, BB

 

[Dave J.]

Rechargeables won't harm it, but most rechargeables deliver poor battery life before dying and needing to be stuck back in the charger.

--Dave J.

 

[TerraDigger]

I use the Powerex 9.6v NiMH Imedion batteries on my Omega. Work very well. 8-10 hrs per charge. But you have to buy the Powerex charger that does 9.6 volts. Most chargers can't do this voltage. 2 batteries & charger is about $55.00 on Amazon. Saves me a ton of money. They also can be charged anytime and do not lose any significant energy if not being used. Buying 9v batteries gets very pricey in the long run.

 

[bb_maine]

Thanks Terra, yeah at close to $5 a pop for a good brand, they do indeed get expensive, not to mention the environmental impact. Thanks for the lead on this product - I'll definitely check them out...

 

[MarkCZ]

For a much better price on these batteries try "Battery Junction" on the internet!
Look for the smart charger, and the LSD batteries (LSD=low Self Discharge) (Tenergy Two Pack $8.95)

The charger
Titanium 9 Volt two bay smart charger, $7.95
Quick shipping, good shipping rates.

Mark

 

[Divedeputy]

I wouldn't give $.25 for all the NiMH and Nicad batteries I've purchased over the years, they all just plain don't do the job one way or another. Anyone who wants them is welcome to dip into my pail full for free. They either offer disappointing useful life in the field, or they don't charge properly, or they just plain blow.

My experience with Li-Ion and LiPo batteries is about the exact opposite. They work very well. I've ordered this charger and battery for my G2 just to see if it works. I spoke with Big Dave at Teknetics and he seemed to think I'd be alright with them, although the tech support I got on the line first told me they may deliver erratic function, which is easily cleared by turning the detector off and then on again.

I figured it was worth a shot. Incidentally, this charger was out of stock at Battery Junction so I ordered mine from Thomas Distributing.........it's the only 9V charger I've been able to find that comes with a DC plug so you can recharge in the field.........very important!

I'll probably post a report once I've had the chance to use them for a while. Worst case I've just spent a few extra bucks to find out. Best case scenario is I've got a reliable, field rechargeable solution. Summer here I come!

I have no affiliation with any manufacturer or supplier:
Battery is: http://www.thomasdistributing.com/iPOWER-9-Volt-520mAh-Lithium-Polymer-Rechargeable-Batteriesbr9V-Lithium-RechargeablebrOne-9-Volt-Battery_p_2989.html
Charger is: http://www.thomasdistributing.com/iPOWER-IP-FC904U-9-Volt--9V-NiMHLithiumNiCD-Battery-Charger_p_276.html

 

[MarkCZ]

I wouldn't give $.25 for all the NiMH and Nicad batteries I've purchased over the years, they all just plain don't do the job one way or another. Anyone who wants them is welcome to dip into my pail full for free. They either offer disappointing useful life in the field, or they don't charge properly, or they just plain blow.

My experience with Li-Ion and LiPo batteries is about the exact opposite. They work very well. I've ordered this charger and battery for my G2 just to see if it works. I spoke with Big Dave at Teknetics and he seemed to think I'd be alright with them, although the tech support I got on the line first told me they may deliver erratic function, which is easily cleared by turning the detector off and then on again.

I figured it was worth a shot. Incidentally, this charger was out of stock at Battery Junction so I ordered mine from Thomas Distributing.........it's the only 9V charger I've been able to find that comes with a DC plug so you can recharge in the field.........very important!

I'll probably post a report once I've had the chance to use them for a while. Worst case I've just spent a few extra bucks to find out. Best case scenario is I've got a reliable, field rechargeable solution. Summer here I come!

I have no affiliation with any manufacturer or supplier:
Battery is: http://www.thomasdistributing.com/iPOWER-9-Volt-520mAh-Lithium-Polymer-Rechargeable-Batteriesbr9V-Lithium-RechargeablebrOne-9-Volt-Battery_p_2989.html
Charger is: http://www.thomasdistributing.com/iPOWER-IP-FC904U-9-Volt--9V-NiMHLithiumNiCD-Battery-Charger_p_276.html

If you were to deep cycle that bucket full of nickle metal batteries I bet you would find many of them would work like new!

Nickle metal are not supposed to develop a false bottom (memory) but I found that they really do (nothing like the old NiCd's).
Once or twice a year fix up a system to deep cycle them, for AA's and AAA's I like to use a LED flashlight, turn it on and go to bed, then recharge the next day.

Next, for the 9 Volts I fixed up a couple of power resistors and hook the batteries up to them with some colored test leads, I monitor the voltage drop with a cheap multimeter. I let them drain until they reach around 2 volts.

And I threw away all my old NiCd batteries.

The biggest problem I've had with the rechargeable's in the past was "Shelf Life" (storage life).
Now with the New "LSD" or they can be stored for months and still be usable!

Mark

 

[Divedeputy]

Hi Mark,
Good comments regarding the recycling of batteries to get them back into full service, and it does work. And you're probably right because they were the best Sanyo cells available at the time, maybe a youth will take on that project and I'd be happy to donate them along with their charger. This is one of the essential activities that I have added to my list of undesirable traits for these batteries. Nicads had their place and time, enough said about them. What I really dislike about the NiMH chemistry is the loss of capacity when stored (10%/month) and their reduced output when cold....not to mention reduced effective capacity when compared to their alkaline counterparts.

Since the advent of Li-Ion and LiPo chemistry there's been no looking back, for me at least. It's hard to imagine older technology keeping up with them. The latest chapter in this tale will be told when I get the new 9V LiPos in the next week or so.

Why is it that the most anticipated boxes take the longest to get delivered? Still waiting for my G2.........!

 

[TerraDigger]

Want to keep your NiMh happy? Every 6 mo/1 yr do a deep discharge/full recharge x 3. The Low Self Discharge NiMH will not lose 10% per month provided they come from high quality mfg..like Sanyo, Powermax, Ansmann. It is best to have them at a partial charge strength (50% capacity) if they are going to not be in use for long periods of time. You do not want to store NiMH at full charge if they are not going to be used for several months or longer.

 

[MarkCZ]

The "LSD" batteries are shipped CHARGED!
I've never tried Sanyo NiMh batteries, but I had a bunch of the Sanyo NiCd's and I didn't like them at ALL! And sense then whenever I'm looking at buying batteries I skip over them!

I just bought 8 "LSD" AA's and a smart charger for them from "Battery Junction" for $50.25 (shipped) the charger has a "Refresh" cycle that can be selected on it that discharges the battery before it charges them. The best deal I could find on the excite same charger anywhere else was $54.00 I got it AND the batteries for $50.25 TOTAL!

The charger is an 8 bay charger, but it monitors and charges each battery independently and has an LED display for each bay. And it also has a 12 volt DC adapter so it can be used on any vehicle's 12 volt power source.

My 1266 and my XLT both used 8 AA's

Mark