My phone doesn't charge other devices when its battery is low
Applicable products：
HUAWEI P30 Pro(single sim card 8gb+256gb、dual sim card 8gb+512gb、single sim card 6gb+128gb、dual sim card 8gb+256gb、single sim card 8gb+128gb、dual sim card 8gb+128gb)，PORSCHE DESIGN HUAWEI Mate RS，HUAWEI Mate 30(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，PORSCHE DESIGN HUAWEI Mate 20 RS，HUAWEI Mate 30 Pro(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI Mate 30 Pro 5G(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI Mate 20 Pro，HUAWEI P40 Pro+(dual sim card 8gb+512gb)，HUAWEI nova Y9a(nova y9a 8gb+128gb dual card)，HUAWEI Mate 40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)，HUAWEI P40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)，HUAWEI Y9a(nova y9a 8gb+128gb dual card)
Applicable products：
| My phone doesn't charge other devices when its battery is low |
When your phone's battery is lower than 20%, wireless reserve charging is automatically disabled, to ensure normal operations and charging performance.
Thanks for your feedback.