No, it does not accept a 18650 battery. Nitecore has a better throw than Surefire. Surefire seems to have left flashlights behind in favor of other products. Am a long time fan of Surefire but competition is providing better performing … Continue reading →

Yes, you could do it. The voltage isn’t too much of a concern, it is the current the panel can provide. Can you charge 12V battery with 24V solar panel? You can use a 24V solar panel to charge a … Continue reading →

Update July 2nd 6:53pm ET: A spokesperson for Tesla reached out to note that Doug Field was Tesla’s chief of vehicle engineering. Elon Musk is the company’s chief engineer, followed by Chief Technology Officer JB Straubel. Field was the company’s … Continue reading →

Wattage is voltage multiples by amperage (max current). If you see “Output: 20V = 4.25A max.” it’s 85 watt charger. What is the wattage of my phone charger? Cell Phones use approximately 2 to 6 watts when charging, while a … Continue reading →

Yes, any 9V battery, including this one, will work just fine with the TENS 7000. Does a TENS unit take a special battery? The most common types of batteries for TENS units are 9v batteries, AA batteries, and lithium-ion batteries. … Continue reading →

Tesla has also talked about million-mile-plus low-cobalt batteries (with results from lab tests), though CEO Elon Musk’s comments on Battery Day last September focused more on technology that could halve battery costs per kilowatt-hour. Can a Tesla go 1 million … Continue reading →

To ‘safely discharge’ a lead acid battery, apply a load that draws a current rating of no more than C/20 and at the same time monitor the voltage. When the battery reaches 10.7v (for a 12v lead-acid battery), it is … Continue reading →

Do deep cycle batteries need a special charger? Yes, you need a charger (and ideally a smart charger) designed specifically for keeping deep cycle batteries healthy to get good results. Because deep cycle batteries aren’t designed to handle the excess … Continue reading →