Using the original charger is the best step to take when you want to charge your cellphone battery. The charger supplied by the manufacturer has been set up and designed in such a way that it is able to charge the HP battery efficiently and safely. Unfortunately, the importance of this is often overlooked, especially when we are in a situation where the original charger is not available, so we tend to borrow a charger from someone else.
Actually, the use of other chargers on HP is not too bad. It's just that the USB charger you use will have different performance, especially about amperage. There are chargers that have a 2A current and some are 1A. Of course this will make the charging process different, especially if your cellphone allows 2A current.
The safest thing is to use the original charger. Because, not a few chargers that have poor quality that can be fatal to the cellphone battery. If you forget to bring a built-in charger and borrow someone else's charger, pay attention to the quality of the charger by checking the voltage and amperage on the charger head.