Also because of a broken usbc port on my x4, I have another 21700 that is at 2.8v as it wouldn’t charge. Have been told not to use it after it’s gotten that low. Is it safe to recharge it or no?
ConstipatedOrangutan
Also is 3.6 the max I can get it to? I feel like it’s usually 4.2v
![[Review] Sofirn SK30: Very nice budget tactical flashlight](https://www.edctips.com/wp-content/uploads/2026/03/7hx3r1yrpbpg1-770x515.jpg "[Review] Sofirn SK30: Very nice budget tactical flashlight")
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Also because of a broken usbc port on my x4, I have another 21700 that is at 2.8v as it wouldn’t charge. Have been told not to use it after it’s gotten that low. Is it safe to recharge it or no?
Also is 3.6 the max I can get it to? I feel like it’s usually 4.2v