Hanaix 7.2V 3500mAh Ni-MH Battery for Dremel 7700-01/7700-02 – Replacement 757-01 (Not for 770 Type 1)

Upgrade your Dremel power with Hanaix

If you rely on a Dremel for detailed work or quick material removal, a dependable power upgrade can make a difference. The Hanaix 7.2V 3500mAh Ni-MH battery is designed to fit Dremel models 7700-01 and 7700-02, serving as a practical replacement for the 757-01 battery while clarifying compatibility with the 770 Type 1 model. This pack emphasizes reliability, safe operation, and a greener design without overpromising outcomes.

Extended runtime and flexible charging

With a robust 3500mAh capacity, this battery offers noticeably longer work sessions between charges compared with standard cells. When paired with your original Ni-Cd charger and power adapter, it supports straightforward charging and convenient recharging during projects, helping you stay productive without frequent interruptions.

• 40% more runtime than typical Ni-Cd/Ni-MH options, reducing downtime between tasks.
• Charging flexibility: compatible with Ni-MH/Ni-Cd chargers and allows charging or discharging as needed.

Durable construction and eco-conscious design

Built through a lead-free surface-mount technology (SMT) process and using high-quality SC cells, this battery aims for dependable performance while limiting environmental impact. The design minimizes memory effects and maintains low self-discharge for readiness when you pick up your tool again.

• Lead-free materials and eco-friendly construction support responsible use.
• SC cells offer performance advantages over classic Ni-Cd options, with reduced memory concerns.

Safety, testing, and certification

Hanaix batteries carry CE, FCC, PSE and RoHS certifications, underscoring adherence to widely recognized safety standards. Each unit has undergone tests for overcharge, overdischarge, short circuits, high temperature, humidity, and internal overheating, with a track record of 1000+ recharge cycles.

• Certified to meet international safety and environmental expectations.
• Proven durability through extensive recharge cycling and stress tests.

Practical usage tips

For best results, verify compatibility with your Dremel model and use the original charger to optimize performance and avoid discharging beyond recommended levels. This approach supports a smooth, predictable workflow during woodworking, engraving, or hobby projects.