If the voltage is too low, you'll get either nothing, or odd / failure behavior when the power draw on the system gets high. If you're comfortable with circuits and soldering, you could open up the laptop charger, find the resistor divider or zener diode on the feedback circuit, and solder on an alternative value. (if I connect it as it is to the IMAX B6 it says something about input voltage is too high). Charge with lower current rate than the recommend current rate makes no harm to battery,but charge hours shall be double or more. I bought an IMAX B6 LiPo Balance charger that needs as input 11-18V but I have an unused laptop charger (the laptop is gone) having 19V with 4.74A. If it were to burn down your house, no insurance. Would this AC adapter work with this external HDD enclosure? power 12v fan using laptop charger while running laptop. You need, Can I use a power adapter with more current but lower voltage on another laptop? For comparison, you can plug your toaster into the same outlet as you'd plug your vacuum cleaner into, but the current they draw (and can handle) is quite a bit different. Why is the following method incorrect when deciding on the possible choices? Be sure to check out the Discord server, too! site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Lower wattage, OK. How to choose between an overfit model and a non-overfit model? It could be the same or different. Press question mark to learn the rest of the keyboard shortcuts. Laptop power supplies, does current matter? Would Earth fireworks work on the Moon or on Mars? It may put a strain on the voltage regulator in your laptop and may also put a strain on your battery (which you might consider removing while you're using the mismatched power supply). The voltage SHOULD match (power adapters provide a steady voltage over a range of currents), whereas the current MUST meet or exceed. Don't do it unless it matches. My pleasure :-) One caveat: the diodes have a negative temperature coefficient, so as they warm up their voltage drops will decrease, allowing the voltage on the input of the IMAX to rise, so if it complains about the voltage being too high after it's been running for a while, just add another series diode. Would something like this work? For starters, watts is power, not voltage. Even if it did I wouldn't risk using the incorrect charger, especially with something as expensive as a laptop. The defunct Toshiba adapter is rated 19 V and 3.95 A. A lower current rating at the proper voltage will probably just melt the power supply. Are the “universal” laptop chargers safe / how do they work? EM Fields, sorry for misinterpreting your response. Forms of stellar orbits around the galactic center. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It will charge slowly or not at all. Can i use a universal laptop charger for +10.8v 4400mah, 47wh. What is the easiest method to lower the voltage to 18V or even a little lower? Can I use this third party charger for my Asus laptop? MathJax reference. But is it safe? Charger produces lower voltage compare to battery pack shall not able to charge in any power. I didn't know this about diodes. The lower voltage means that the battery isn't charging - but my concern is the higher current - 0.55 more. If a creature is hit by an OA by someone with the Sentinel feat, but then gains a new type of speed, does that new speed also become 0 for the turn? The Overflow #45: What we call CI/CD is actually only CI.
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