Case for power bank with flashlight for 21 pcs 18650 batteries S21 on 4USB, Micro-USB, Type-C

S21 Power Bank Case with Flashlight (for 21 18650 batteries) — a highly efficient and convenient solution for creating a powerful external power source. The case allows you to assemble a reliable, large-capacity power bank with the ability to charge various devices via popular USB interfaces.

If you need an autonomous power supply for traveling, camping or emergency situations — the S21 case will be a practical choice. It combines high capacity, functionality and a compact form factor, complemented by a built-in LED flashlight.

S21 — maximum energy when it is really needed.

Working principle:

The case houses 21 18650 lithium-ion batteries, which form a capacious battery pack. The built-in control board provides a stable output voltage of 5 V for powering and charging electronic devices.

Batteries are charged via Micro-USB or Type-C connectors, and connected devices are powered via USB outputs. An additional LED flashlight is provided for lighting in the dark or in emergency conditions.

Advantages:

• 🔋 Support for 21 18650 batteries — large capacity and long battery life
• 🔦 Built-in LED flashlight — useful on the road and in emergencies
• 🔌 USB connectors — ability to charge multiple devices
• ⚡ Output current up to 2.1 A — stable and fast charging
• 🧱 Durable ABS plastic — reliability and durability
• 🎒 Compact design — convenient to take with you

 Features:

 Application:

• 🏕 Travel and camping
• 🚗 Travel and long-distance travel
• ⚡ Emergency backup power
• 📱 Charging smartphones, tablets, gadgets
• 🧰 DIY projects and your own power units

⚠ Please note: 18650 batteries are not included in the delivery set and must be purchased separately.

🔥 Why choose the S21 case?

• 💎 Large capacity and reliable design
• 🔦 A useful flashlight in any conditions
• 🔋 Flexibility in choosing batteries
• 💸 A profitable solution for creating a powerful power bank
• 👌 The ideal option for an active lifestyle

Collect your own energy source and be ready for any situation — with the S21 case.

WST — a store where energy is always under control.

Order the S21 power bank case with flashlight now and provide your devices with reliable power on any trip.

Always be charged. Choose WST.