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What will happen if I use 33W charger in 10W phone ?
- Thread starter mahadevan_iyer
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- Replies 37
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it would not blow out your device. poorly designed charging circuits in phones might cause issues. but modern phones with properly spec usb charging ports should handle even laptop chargers just fine. some phones like samsung even have a software settings that can take less charge than supported for slow charging.
Basically... Redmi phones should be fine. But since Note 4 is quite old these days, it might not be a good idea to regularly charge it with a powerful charger. I imagine it uses a micro-usb port? USB-C ports can be a bit risky because a lot of companies do their own implementation which is not spec compliant.
Basically... Redmi phones should be fine. But since Note 4 is quite old these days, it might not be a good idea to regularly charge it with a powerful charger. I imagine it uses a micro-usb port? USB-C ports can be a bit risky because a lot of companies do their own implementation which is not spec compliant.
No of course not. It's perfectly safe. Your phone will only take the current it needs. You just need to make sure the voltage is same.
Imagine electricity as a pipe, the current is it's width. Your phone's charging circuit is the tap and the end of it, you battery receives electricity from the tap.
You can make the pipe as large as possible, the water flow will still be decided by the pipe's opening at the end. If your charging circuit is good, it'll be fine. I've seen people mod RN4 for 18W fast chargers as well.
Now imagine voltage as the pressure of water running through the pipe. Higher than normal voltage could damage the phone, like those water cannons used by the police, those can hurt.
TLDR: Make sure charger is of 5V, current doesn't matter.
Imagine electricity as a pipe, the current is it's width. Your phone's charging circuit is the tap and the end of it, you battery receives electricity from the tap.
You can make the pipe as large as possible, the water flow will still be decided by the pipe's opening at the end. If your charging circuit is good, it'll be fine. I've seen people mod RN4 for 18W fast chargers as well.
Now imagine voltage as the pressure of water running through the pipe. Higher than normal voltage could damage the phone, like those water cannons used by the police, those can hurt.
TLDR: Make sure charger is of 5V, current doesn't matter.
Only higher electric potential (V) will cause damage to a device.
The current mentioned in any kind of power supply (a phone charger here) is the max current it can provide, not the current it will necessary provide.
Current is function of potential difference and resistance of the circuit, so a fixed resistance (at any point in the charging) and voltage will consume only a fixed current.
TLDR - no, it doesn't matter unless that charger is faulty.
The current mentioned in any kind of power supply (a phone charger here) is the max current it can provide, not the current it will necessary provide.
Current is function of potential difference and resistance of the circuit, so a fixed resistance (at any point in the charging) and voltage will consume only a fixed current.
TLDR - no, it doesn't matter unless that charger is faulty.
Adding to the earlier post, Xiaomi's 2A chargers I've seen provide more than 2A sometimes and does get quite warm. Their phone's charging circuits might need more than just 2A. Your Poco charger can switch to 5V3A for your phone. It could use upto 2500mA based on some findings from Redmi Note 4 group's I've been in.
You can use it, it's perfectly fine, people have been doing it for a long time. Since it is an old phone with weared out battery, I'd still advice not do it all the time, if you want your battery to last a couple more years.
The rated current of almost any good quality charger is generally conservative, a good quality 2A charger can and does provide more than 2A (generally 2.1-2.5A) and most phones can and does take more than 2A, at least in the initial stages of charging (low battery percentage) thus the higher than rated charging rate.
Nishant
Staff member
It will charge at 10w only.
To prevent the power bank from turning off becuase of so little load from the wearable. Like how most UPS's turn off after 5 minutes, if you use it to just power a modem or something. And then leave a bad review on Amazon saying it doesn't work.
socrates
I got banned!
For anyone who thinks that only voltage matters & not the amperage, I would like to say only one thing. A automobile spark plug cable carries anywhere from 15 to 25 kilo volts but ppl who feel it (including yours truly) live to tell the tale only because the amperage is v v low. If it was higher I wouldn't be typing this.😁😁
@socrates I just wanted to help that guy feel confident. I still added a post below saying too high of an amperage could be dangerous, but what do I know, I'm just saying things from class 12 physics😅.
I understand you had some experience (good and bad) working with these, would you think a 2A charging circuit on a phone which does take more than that from 2A chargers can stop the excess current from a 3A charger?
I understand you had some experience (good and bad) working with these, would you think a 2A charging circuit on a phone which does take more than that from 2A chargers can stop the excess current from a 3A charger?
