Most manufacturers advise utilizing the USB cord (and wall charger) that originally came with your power bank. However, cables and wall chargers have very wide compatibilities so you should be able to use basically any type of cable or charger, provided that they have a quality built. Using cheap and/or poorly made cables and chargers will result in slow-charging times and might even cause damage to your power bank. Charging technology: if the power bank comes with a USB type C port and fast charging technology such as PD or QC that can sustain 30W+, then it will charge much faster compared to a power bank that has a micro USB charging port and a maximum input power of 18W. Due to this factor, you can find power banks with larger capacities that can charge faster than ones that have two times lower capacity overall. Again, each power bank is different, so for the exact interpretation of a red LED blinking on your power bank, please consult the user manual. You can also get in touch with me via the comment section below and I’ll do my best to figure it out. LED Lights Blinking But the Power Bank Won’t Charge The adaptor you’re using could be faulty or delivering too low an output for the power bank to charge. Consider trying a different adaptor. If this resolves the issue, it’s a clear sign that your original adaptor is faulty and needs replacing.

Romoss Power Banks of 2023 - FindThisBest The 10 Best Romoss Power Banks of 2023 - FindThisBest

Error State: A flashing red light could also indicate a problem or error with the power bank, such as a charging fault, a short circuit, or an issue with the internal components.

The Basics of Choosing the Romoss Power Banks

If you followed the suggested troubleshooting list and the problem still persists then there are two main possibilities: Battery Health: In some advanced models, different blinking patterns or colors might be used to indicate the health of the battery, warning the user if the battery performance is degrading and needs to be replaced. Power bank capacity: generally speaking, the more capacity a power bank has, the longer it will take for it to charge. So you can expect to reach a full charge much slower for a 72000mAh power bank for example, compared to a 5000mAh power bank. However, the difference between the charging time of these different capacities can be influenced by the next factor: Error Indication: Some power banks use LED lights to indicate problems. For instance, if all lights are flashing simultaneously, it might be a sign that there’s an error, like a short circuit or an overcharging problem. In some cases, you might notice that the power bank is not charging despite being plugged into a power source, with the LED indicator lights flashing.

ROMOSS，Charging Master - ROMOSS Official Website

When it comes to charge times, there are a few different factors that might influence how long it will take for the power bank to reach that 100% level: As an outro, I wanted to point out that LEDs are not the only option when it comes to power banks. In fact, they’re the most prevalent solution out there because it’s the cheapest and simplest one to create. So the majority of the manufacturers go with this one out of commodity. But there are other options out there as well, which I would recommend over the classic LED lights. LCD Display Power Banks All these symptoms are pointing to an overcharged battery that has expanded. In this stage Li-ion batteries can be dangerous, read more about it here. Troubleshooting Did Not Solve the Issue?When charging your power bank, it’s crucial to use a main electric power outlet rather than a laptop’s USB port. The latter usually only output around 0.5 A, which typically isn’t enough to efficiently charge a power bank. Romoss power banks come with a variety of features, such as multiple output ports, LED indicators, and built-in cables. Consider which features are most important to you and choose a power bank that has them. For example, if you have multiple devices, a power bank with multiple output ports may be more convenient for you. Price After seeing all four lights blink on your power bank, you know that the device is fully charged. What do you do next? Unplug it, obviously. Once you do that, you can use the power bank to charge your phone.