Technology
Technology
Lithium vs Alkaline: Which Battery Is Right for You?
Not all batteries are created equal. Learn when to reach for lithium versus alkaline and save money without sacrificing performance.
March 20, 2026|5 min read|Energizer Lab
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How to Choose the Right Portable Charger
GuidesMarch 10, 2026|6 min read|Energizer Team
How to Choose the Right Portable Charger
The portable charger market is flooded with options. Understanding three key specs will help you choose wisely.
Capacity (mAh)
A 10,000mAh charger provides roughly 2 full iPhone charges. For laptops, look at Wh (watt-hours) — you need at least 20,000mAh / 72Wh for a meaningful laptop top-up.
Charging Speed (Watts)
USB-C PD at 20W+ means fast phone charging. For laptops, 65W is the sweet spot. Our Recharge Ultra delivers 65W for full laptop support.
“The best portable charger is the one you actually carry. Size and weight matter as much as capacity.”
— Energizer Product Team
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Energizer's Sustainability Commitment: Recycling Made Easy
Our goal: zero battery waste by 2030. Learn about our recycling programs and how to dispose of batteries responsibly.
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