When lithium-ion batteries are deeply discharged, even down to 0 V, many charging solutions have an undervoltage startup threshold. A battery over-discharged to 0 V can no longer be recharged with those solutions.
However, the NFC-WLC protocol supports trickle pre-charging. Even when the battery voltage is below the system startup threshold, the harvested RF energy can supply a tiny current to safely recover the battery.
Important note: Pre-charging parameters must be strictly tuned to prevent battery damage.
However, the NFC-WLC protocol supports trickle pre-charging. Even when the battery voltage is below the system startup threshold, the harvested RF energy can supply a tiny current to safely recover the battery.
Important note: Pre-charging parameters must be strictly tuned to prevent battery damage.