Rechargeable 9v batteries

[NickTej22]

Picked up a set of 4 plus the charger for like $20 on Amazon. These things are great, never buy anymore batteries lol. Has anyone else thought of using them?

[ddnidd1]

You sir are not the first.

[Thumper]

Been using high end rechargeable 9vs for the Xwire for 3+ years.

[NickTej22]

I figured I wouldn't be first, but what an awesome thing lol

[line6man]

It's generally not a good idea. Rechargeable batteries are not meant to provide a steady voltage and current.

[NickTej22]

I never heard that one, wouldn't that make cellphones and laptops etc unsafe lol?

[line6man]

Originally Posted by NickTej22

I never heard that one, wouldn't that make cellphones and laptops etc unsafe lol?

You have to recharge cell phones and laptops constantly.

[NickTej22]

That's why I have 4 lol. 2 on the charger, 2 in the bass. The two in there now have lasted probably a few weeks so far though

[Rune Bivrin]

Originally Posted by line6man

It's generally not a good idea. Rechargeable batteries are not meant to provide a steady voltage and current.

Say what?!

The downsides with regular rechargables compared to alkaline batteries are a different nominal voltage, lower capacity and a different discharge to voltage characteristic. If you're aware of that they're perfectly fine.

[walterw]

Originally Posted by line6man

It's generally not a good idea. Rechargeable batteries are not meant to provide a steady voltage and current.

this.

rechargeables in low-drain things like basses and pedals are kinda silly; they don't hold a charge over time, so they'll die just sitting there faster than a regular alkaline will while being used! when a regular 9V lasts a year in a bass, what's the point?

rechargeables make sense for high-drain stuff that kills a regular battery in one night, like wireless units.

[Rune Bivrin]

Originally Posted by walterw

this.

rechargeables in low-drain things like basses and pedals are kinda silly; they don't hold a charge over time, so they'll die just sitting there faster than a regular alkaline will while being used! when a regular 9V lasts a year in a bass, what's the point?

rechargeables make sense for high-drain stuff that kills a regular battery in one night, like wireless units.

True. There's absolutly no point in having a rechargeable in the bass unless the pre-amp is very battery hungry.

That's the other parameter in rechargeables: the self-discharge rate, which is rather high for NiMH:s. For Lithium rechargeables it's much less of a problem.

[line6man]

Originally Posted by NickTej22

That's why I have 4 lol. 2 on the charger, 2 in the bass. The two in there now have lasted probably a few weeks so far though

Why do you want to go to all the trouble of fooling around with rechargeables? Put a regular battery in your bass and change it once a year or so. 6 months if you play a lot.

Originally Posted by Rune Bivrin

True. There's absolutly no point in having a rechargeable in the bass unless the pre-amp is very battery hungry.

And preamps rarely are. 500mAh capacities are common for batteries, and yet active components draw currents as low as 85uA for low-power opamps (~5882 hours), and as high as a couple of milliAmps for FETs (~250-500 hours).

[TOOL460002]

Wow. Battery lasts TWO weeks? Two? I change mine once a year and that's just to be safe.

[NickTej22]

I bought them when I bought my bass which was my first active bass I owned, I wasn't aware batteries lasted that long, I never would have guessed that. Either way it was $20 bucks, they work great, I'm happy.

[khutch]

Rechargeable batteries are different enough in several key respects (all mentioned above) that some people are going to love them and others are going to hate them. There is nothing wrong with them in this application, they are just different. If you love them then love on.

Ken

[walterw]

i would just get tired of changing the battery in the bass every gig instead of every six months or whatever with a normal alkaline. (i use kick-butt lithium rechargeables for my wireless in-ears, and just from one weekend to the next they drain significantly while sitting in the van.)

even then a "fresh" rechargeable will only hang at maybe 8.4 volts, well below a new alkaline which will be above 9V.

[NickTej22]

Originally Posted by walterw

i would just get tired of changing the battery in the bass every gig instead of every six months or whatever with a normal alkaline. (i use kick-butt lithium rechargeables for my wireless in-ears, and just from one weekend to the next they drain significantly while sitting in the van.)

even then a "fresh" rechargeable will only hang at maybe 8.4 volts, well below a new alkaline which will be above 9V.

I've had my rechargeables in for probably over a month now, I play a couple hours a day. Still going strong. But when they do get drained(they haven't yet since I owned them) I have the other set, I can swap them out, charge them over night then I'm good for 6 months or whatever. It's the same discharge rate, same comes and everything, just rechargeable and I'm saving money lol.

[walterw]

same self-discharge rate as regular batteries?

[causeBASS]

after meeting Kim Stone (played bass with Spyro Gyra) a couple years ago, he said he only uses carbon zinc batteries in his bass, he gave me a couple (i have 18v dual actives) and I have never used anything else since, find them in the dollar store , (I get mine at Big Lots, 4 for $1.90)

tighter bass, warmer sound

give them a try

[ddnidd1]

Originally Posted by causeBASS

after meeting Kim Stone (played bass with Spyro Gyra) a couple years ago, he said he only uses carbon zinc batteries in his bass, he gave me a couple (i have 18v dual actives) and I have never used anything else since, find them in the dollar store , (I get mine at Big Lots, 4 for $1.90)

tighter bass, warmer sound

give them a try

Good lord, what BS !!!!