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Usage Notes
1. To protect the long-term capacity of your device’s battery, please unplug the
power wire promptly after the device is fully charged.
2. Keep the product away from extreme heat or cold, as well as any flammable
items or damp places. Also avoid dropping, hitting or throwing the product.
3. Please fully charge your external battery at least once every four months to
avoid shortening its lifespan.
4. Do not try to charge and discharge the Astro E4 at the same time, as this
may reduce the battery’s lifespan.
5. Since the combined output of both ports is limited to 3 amps, concurrent
use of the two ports may slow the charging process.
6. The battery is 92% efficient, accounting for power lost through circuit
heat and voltage conversion, which is up to 10% above the industry average.
Energy is also lost within the charging cable and your device (approximately
15-20%).
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