Battery Advice

[lauraly]

sorry if this is a stupid question but I found these nice small 9v batteries (10A L1022 9V ) do you think that they would work the same as the square 9v batteries or would they damage the diode.

 

[lasersbee]

They are for Car Starter or similar RF Remote Controls... you would
probably need 3 to 4 of them to get the same duration as a square 9Volt alkaline.

 

[lauraly]

Thanks for the reply, bummer, I am trying to find a small equivalent of the 9v square or even better would be a nice host that takes a 9v square.

Any Ideas?

Basically my problem is that I do not know how to connect up the driver to the batteries in the host. The module and diode are installed into a 3w MXDL host but I am lost now! Hope this makes sense.

 

[pseudolobster]

Most people around here use lithium ion batteries... They're 3v or 3.6v and come in all shapes and sizes. They last longer than any other rechargeable battery too. http://dealextreme.com carries a wide selection, even ones that are the same size and shape as AA batteries or AAA batteries, which will probably fit your host.

Alkaline 9v batteries are made up of 6 smaller 1.5v cells in series. In the case of regular rectangular 9v batteries, the cells they are made up of are AAAA cells which are less powerful than AAA's. The entire 9v battery will have the same maximum current draw (mA) as a single AAAA cell and the same lifetime (mAh), which isn't very much at all. To have any chance of getting the full power out of your laser, and any chance of having it last more than a few minutes at full power, you should really use li-ion cells.

 

[Glaserfan]

The design of the rectangular 9v battery seems to depend on the brand also..

A plain Rayovac Heavy Duty 9v has six flat cells stacked inside. The flat cells are the same shape as a horizontal slice of the battery..

 

[lauraly]

Great info, thanks so much for the replys