Energizer 635236 Lithium Battery, 9 V - Silver

Excellent for multimeters and most handheld calibration devices, seems to handle a backlight with far less impact on its overall life.Spec:Battery Capacity: 800mAhBattery IEC Code: 6AM6Battery NEDA Code: 1604LCBattery Size Code: PP3Battery Technology: Lithium Manganese DioxideBattery Terminals: Snap ContactBattery Voltage: 9VExternal Depth: 17.5mmExternal Height: 49mmExternal Width: 26.5mmSVHC: No SVHC (17-Dec-2014)Weight: 33.9ghttp://data.energizer.com/PDFs/L522_EU.pdf

Tried local businesses and got tired of hearing stuff like "there is no such battery as a PP3" and "they do not do a lithium version" - so only option online.1. it fits2. power is on3. no more beeping4. I'm happy - probably for another 3 years - which is how long the last lithium replacement in my smoke alarm lasted

I got 5 years out of this in a smoke alarm before the voltage drop was just sufficient to trigger 'low battery' beeping. The voltage is still in the 'good' zone on a test meter, just lower than for a new battery, so metering was not a good guide to condition as battery could no longer supply the current needed

Lithium batteries can be a strange thing, I purchased this item to use in a guitar transmitter but found that unlike an alkaline battery the charge in it would just fall away all at once. So basically not fit for this particular purpose.

These are brilliant batteries. For low drain devices such as smoke detectors, these are the best batteries.I've used this to power a pre-amp inside a bass guitar, where it will last for years.

Item arrived on time, as described. Fitted to smoke alarm, so will know if long life is fulfilled in a few years!

Will do the job, but very expensive for a company like this! Hence only four stars.

excellent battery my insect vaccuum works now , i feel more confident catching fast insects now.