Choosing the right power bank capacity means matching its usable output to your device’s battery size and desired number of charges, while accounting for voltage conversion and inevitable energy loss during charging.

Modern smartphones typically house batteries bet 3,582mAh (e.g., iPhone 16 Pro) and 5,000 mAh (e.g., Samsung S25 Ultra), with some gaming phones exceeding 8,000 mAh. Due to internal cell voltage (3.7 V) and USB boost inefficiencies, expect roughly 70–80% of a bank’s rated capacity to reach your device. LITO offers three sizes—5,000 mAh, 10,000 mAh, and 20,000 mAh—each tailored for specific use cases, ensuring a balance of portability and charging power.

Why Capacity Matters

A power bank’s capacity, expressed in milliamp-hours (mAh), indicates how much electric charge it can store. Higher mAh ratings mean more stored energy but often come with added weight and size . Selecting the right capacity ensures you’re neither underpowered nor carrying unnecessary bulk.

Matching Capacity to Your Device

5,000 mAh banks are ideal for one quick “top-up” of most smartphones but may not fully recharge larger models .

10,000 mAh units strike a sweet spot for daily users, delivering about 6,000–8,000 mAh of real-world output—enough for roughly one to two full charges on a 4,000 mAh phone .

20,000 mAh packs suit multi-device needs or tablet users, offering two to four full smartphone charges and occasional tablet top-ups.

Accounting for Efficiency

Power banks internally operate at 3.7 V but must boost output to 5 V for USB charging, leading to conversion losses. Additionally, circuitry and cable resistance reduce overall efficiency to about 70–80% . For example, a 10,000 mAh bank typically delivers around 7,000 mAh of usable charge, not the full rated amount.

LITO’s Power Bank Lineup

LITO’s three-model lineup covers every scenario with certified safety and reliability:

5,000 mAh: Ultralight “emergency” option for a single phone boost.

10,000 mAh: Daily driver for one to two smartphone charges.

20,000 mAh: Travel-ready powerhouse for multiple devices and tablet top-ups.

Each model features high-efficiency cells, multi-layer protection (over-charge, over-discharge, short-circuit), for durability without bulk.

By understanding your device’s battery size, estimating required charges, and accounting for real-world efficiency, you can pick among LITO’s 5K, 10K, and 20K mAh models to stay powered through any day—without carrying unnecessary weight.