Why won't Anker Prime Power Bank (26K, 300W) recharge right after it is fully drained?

After heavy use, the battery cells may be too warm. Recharging will resume once the temperature drops to a safe level, protecting the battery lifespan.

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Why won't Anker Prime Power Bank (26K, 300W) recharge right after it is fully drained?
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Play videoAnker Prime Power Bank (26K, 300W)Quick Start Guide
Anker Prime Power Bank (26K, 300W)Quick Start Guide
Play videoAnker Prime Power Bank (20K, 220W)Quick Start Guide
Anker Prime Power Bank (20K, 220W)Quick Start Guide