Envelope Slim Power Bank for Subscription Inserts

Envelope Slim Power Bank for Subscription Inserts

Subscription boxes win on surprise-per-centimeter, and the envelope format is the thinnest charger that ships flat in the box wall. Polymer battery, slim profile, and a print surface sized for the brand’s unboxing moment. Subscription services and mail-order gifting.

Key Features

• Box-wall slim — ships flat inside the subscription carton, no void fill
• Unboxing-surface print — the envelope face carries the brand moment
• Polymer battery — safe-spec cell for mail-truck heat and cold
• Insert-tier pricing — per-unit economics that survive subscription math
• Seasonal art swaps — print refreshes per drop without new tooling

Specifications — Typical Configuration (customizable per order)

• Capacity: 4,000mAh class (2,600–6,000 on request)
• Cell: Li-polymer / Li-ion, 500+ charge cycles
• Shell: envelope-slim polymer shell, full-face print
• Battery: Li-polymer
• Format: subscription-insert flat
• Certification: CE / RoHS / FCC · Warranty: 12 months

Final configuration confirmed with you before order confirmation.

Customization & Ordering

Print the drop’s art, set the reserve, quote the subscriber count. Sampling in 5–7 days, FOB Shenzhen.