Recargerble 9V batteries

[mikey4402]

Anyone use a 9v battery charger?

 

I run through 9v like candy, im thinking i could save enought money to buy a new pedal if i used rechargble.

 

Any recommendations?

[dap99]

Get a OneSpot

[kidofthecorn]

Get a OneSpot

or any other multiple power supply... Godlyke, DCbrick, PowerPad, etc... really!! it is worth it

 

[bowlingshirt]

Yeah, just daisy chain your power supply.

[amp_surgeon]

The capacity of rechargeable batteries is a LOT lower than non-rechargeable batteries. Lithium and alkaline conventional 9V batteries have capacities between 1000 mAh and 2000 mAh. A rechargeable NiMH 9V battery might have a capacity of 300mAh at most. Some are only half that much.

 

The "mAh" number is "milliamp-hours". This is the amount of current times the number of hours of use. For instance, if you have a pedal that uses 50mA of current, then it should run 20 hours on a 1000mAh battery, while it will only run 3 hours on a 150mAh battery.

 

Bear in mind that most pedals have an interlock on the input jack, so they're drawing current from the battery anytime there's a plug in the input jack, even when the effect is switched off. If if you set up your pedal board during a sound check, and then don't play for another 3 hours, then your rechargeable batteries might all be dead before you take the stage.

 

Get a power supply.

[mikey4402]

 

The capacity of rechargeable batteries is a LOT lower than non-rechargeable batteries. Lithium and alkaline conventional 9V batteries have capacities between 1000 mAh and 2000 mAh. A rechargeable NiMH 9V battery might have a capacity of 300mAh at most. Some are only half that much. The "mAh" number is "milliamp-hours". This is the amount of current times the number of hours of use. For instance, if you have a pedal that uses 50mA of current, then it should run 20 hours on a 1000mAh battery, while it will only run 3 hours on a 150mAh battery. Bear in mind that most pedals have an interlock on the input jack, so they're drawing current from the battery anytime there's a plug in the input jack, even when the effect is switched off. If if you set up your pedal board during a sound check, and then don't play for another 3 hours, then your rechargeable batteries might all be dead before you take the stage. Get a power supply.

 

 

Im assuming this is why you dont see many rechargeble 9vs on the market particuly in retail stores. It could cause probems if such products where more common place, since 9v are used in smoke detectors for example.

 

Thanks for the info.

 

Ill Check out some of thosue power suppies.

[amp_surgeon]

 

Im assuming this is why you dont see many rechargeble 9vs on the market particuly in retail stores. It could cause probems if such products where more common place, since 9v are used in smoke detectors for example. Thanks for the info. Ill Check out some of thosue power suppies.

 

 

Actually, a lot of stores do carry 9V rechargeables. Radio Shack even has them. They're very handy for devices you use frequently, but don't need them to run for a long time between charging. They can save you a mint in battery costs, plus they're environmentally friendlier than tossing out a handful of alkalines every week.

 

It would be a disaster to put them in something like a smoke detector, though. You'd be recharging the damn things at least once a month. My house is full of smoke detectors, and it drives me nuts every time one has weak batteries. I have to wander around the house trying to figure out which one is chirping. I'm trying to make it a habit to swap them out whenever I have to reset the clocks.

 

The thing to think about with batteries is whether you need portable power while you're using them. I know someone who plays gigs at outdoor venues where there often isn't any AC power. He uses a Crate Limo battery powered amp. For him, battery operated effects makes sense. For anyone playing clubs or other venues where AC power is available - use a power supply.

[fly135]

Also NiMH usually run at 8.4V (~150mah) vs 9.0V (~550mah) for alkaline.