It depends on how much current the ESP32 and the external components are using. Using the example scenarios from ESP32 Sleep Modes & Power Consumption, considering only the power modes: Active mode, 260mA = 38 hours. Modem sleep, 20mA = 20 days. Light sleep, 0.8 mA = 1 year, 5 months. Deep sleep, 10 uA = 1 century. AceBeam IMR21700NP-510A if you want powerbank option. I have one & it's great. Little slow to recharge, 75g. 1. JKBFree • 4 mo. ago. I use the clutch and its about as skinny as a few credit cards. -2. M23707 • 4 mo. ago. great suggestions - a good smaller power bank is a must. The Sony CP-V5A portable 5000mAh charger is a recommendable power bank with a good value for your money. It's light, handy and charges your phones or tablets fast. 7.8. OVERALL SCORE. Review of Sony CP-V5A Power Bank and External Portable Charger 5000 mAh capacity. Efficiency rate, charge rating, price in Philippines of pocket charger. To determine the capacity of your smartphone’s power bank, divide its capacity by its phone’s battery capacity. When compared to a standard power bank, a 20,000 mAh iPhone X battery should last three to four hours, whereas an iPhone 8 battery can last three to four hours. A power bank with a higher capacity may be the best option for you. Latest Power Banks. Price. Mi 3i 10000 mAh Power Bank. Rs 999. Croma 10000 mAh Power Bank. Rs 499. Ambrane 10000 mAh Power Bank. Rs 699. realme 10000 mAh Power Bank. Small power banks with 4,000mAh to 7,500mAh can provide decent backup power but, at most, enough for just one full recharge or so. Mid-range power banks will pack in around 10,000mAh to 15,000mAh For this roundup, we’ve chosen a few power banks across various capacity levels, as each range tends to increase in both size and price in a fairly linear fashion. Specifically, we’re going to look at power banks at or around these milliamp hour (mAh) levels: 5,000 mAh, 10,000 mAh, 20,000 mAh, 50,000 mAh. World-class chips built into the power bank are not only safer, but improve charging conversion rate and stabilize discharging voltage with advanced resistance-capcitance sensors to optimize efficiency and durability. Added 100 Rounds. Increased 10% power output efficiency. Up to 93% conversion rate. Minimum 3300mAh actual output. Qr6n05.