Keeping your phone or devices powered up on the go doesn’t require expensive accessories. A budget power bank can provide reliable backup power — perfect for travel, busy days, or emergencies. Here's how to make a smart choice without spending more than you need to. Capacity Basics Battery capacity is measured in mAh (milliamp hours): 5,000–10,000 mAh: Good for 1–2 full phone charges 10,000–20,000 mAh: Best for multiple charges or charging tablets Larger capacity equals more weight, so balance based on your actual needs. Port Types and Charging Speed Check the ports available and their output speeds: USB-A and USB-C are most common 18W output is considered fast charging Some models support Power Delivery (PD) or Quick Charge for faster results. Input speed also matters — faster input means quicker recharging of the power bank itself. Size and Portability Budget power banks often come in compact sizes: Slim, phone-sized models fit in pockets or bags Some include LED charge indicators to show remaining battery Choose one that suits your mobility and bag space. Durability and Build Look for models with: Sturdy casing (metal or reinforced plastic) Temperature and short-circuit protection These features help prevent overheating and damage during use. Brand Reliability Cheap doesn’t have to mean unreliable. Stick to well-reviewed brands: Anker Aukey RAVPower Xiaomi (Mi Power Bank) INIU These brands offer power banks under $30 with dependable performance and safety standards. Final Charge A budget power bank can deliver real peace of mind without the premium price. Focus on charging speed, capacity, and safety features to make sure your device stays powered when you need it most — while keeping your spending grounded.