![]() Please make sure that you pick out the correct battery to avoid ordering mistakenly. Before placing an order, you'd better look at our battery from following pictures and check if it is the same as your original one. Acer Predator HELIOS 300 G3-571-77QK replacement battery) is perfectly functional before shipping to you. We have a rigorous inspection process to ensure that your order (e.g. Our batteries are packed in cartons with anti-static bags and anti-pressure sponges to effectively protect the batteries in transit. Thank you for shopping the Acer Predator HELIOS 300 G3-571-77QK replacement battery at. It is certified as a safe and reliable product through a series of rigorous tests on the Acer examine system. Acer Predator HELIOS 300 G3-571-77QK notebook battery is made of environmentally friendly materials, without lead and mercury. It carries with a smart interior circuit board that provides battery-unbalanced-shut-off protection, thermal runaway protection, overcharged protection, over-discharged-shut-off protection, and high/low-temperature-shut-off protection. Our Acer Predator HELIOS 300 G3-571-77QK laptop battery which we design is in strict accordance with the highest control standards. It is more convenient for you to use our replacement Acer Predator HELIOS 300 G3-571-77QK batteries. Moreover, this battery has no "memory effect" and you don’t need to discharge before each charge. With high-quality battery cells and materials, your laptop will run longer and more secure. ![]() I have not re-opened the laptop yet to check for loose connections or reinstall the old battery, was wondering if anyone had other suggestions before I did that.The 15.2V 48Wh(4 cells) Acer Predator HELIOS 300 G3-571-77QK laptop battery is made of high-quality lithium-ion battery cells, which has been tested to be brand new and totally compatible with the original manufacturer specifications, meets or even exceeds the original battery performance. The battery I ordered was supposed to be for the PH317-51, but the bill of lading shows it as also being for the G3-571 & 2 as well- is this right? I did not check the part number on the battery before I installed it. It seems like the system recognizes the battery is installed, and seems to judge it in good condition, but no charge and will not take a charge. ![]() What's oddest is the Device Manager shows the battery as present and working properly, and the Battery Report shows full charge capacity as equal to design capacity, which on the old battery showed reduced capacities of various severities. Unplugging AC gets an immediate power off stone cold dead. Pushing battery reset (pinhole) for various lengths of time from 5-30 sec, uninstalling Microsoft AC adapter and ACPI-Compliant Control Method Battery and restarting, reseating AC adapter multiple times all have no effect. New battery will not charge at all- meter shows 0% and plugged in, but not charging. I tried running it down and recharging (when it would) several times, but no change- so I bought a new battery and installed it (not on warrantee). I had been keeping it plugged in pretty much all the time, and it seemed the battery had been ruined and no longer would take a charge. Model PH317-51, Windows 3, BIOS V1.21 - old battery was having difficulties- battery meter would show no capacity available, but charging, it would often give a critical low battery warning or even go to sleep mode, then sometimes it would show a charge level, even up to 100%, but even when showing 100% charge, if I unplugged AC, it would only run like 5 minutes and die.
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