Replacement laptop batteries are a life saver. One thing that every laptop user knows that on occasion their laptop batteries run out. This means that whatever they were working on has to be stopped and saved or they risk losing it. They can't get back to work until their battery charges back up.
If you have an iPhone, turn off the "push e-mail" so that it is not constantly checking for messages. Instead retrieve emails manually to increase the edison battery time between charges.
An internal microphone is used on the Contour helmet camera. It saves weight, allows the camera to be smaller, and has low wind noise on feedback. Helmet camera companies still haven't figured out how to get great sound quality because wind is a big issue. One common complaint about VHoldR's ContourHD helmet cam is that the sound quality is low and muffled. They use a screen or a plastic part of the camera body to cover up the mic so that the wind noise is low, but this makes for fairly poor sound quality. On the flip-side, every other helmet camera company has yet to solve this problem, so if you're looking for one with perfect sound then you're wasting your time...for now.
Another option is battery-powered gloves. The very best of these uses lithium-ion batteries that will keep you warm for hours and recharge rapidly. On the lower end are gloves that use regular AA batteries or something similar. These tend to be bulkier and do not last as long, especially the rechargeables. They do have the advantage that you can just swap in a fresh pair if the ones you're using run out of power. But your best bet is to carry a spare lithium ion batterty stocks-ion battery and do the same thing.
The tools cobalt ontario canada battery is unique the tool's power does not diminish as the battery power runs low. There is full uniform power all through the battery runtime.
Avoid buying spares: Unlike wine and cheese, Li batteries do not improve with age. Avoid the temptation to buy spares, unless you use them frequently. Check the manufacture date, and never buy an old battery, even if on sale.
Besides helping me discover what cordless drill to buy as a gift, my cordless driver comparison helped me to better understand my tool. I now know how and why to use the clutch settings and am now taking the time to set it correctly.