Battery for Honeywell 300-03866, LYNXRCHKIT-SHA, Lyric Keypad LCP500-L, Lyric Controller, 3700mAh Ni-MH

Our high-performance nickel-metal hydride replacement compatible batteries are designed to provide reliable power for a wide range of devices, ensuring optimal performance and longevity. 

Key features include:
• Battery Type: Nickel-Metal Hydride (Ni-MH)
• Voltage: 7.2V
• Capacity: 3700mAh / 26.64Wh
• Dimensions: 100.80 x 68.00 x 17.20 mm
• Weight: Approximately 349g
• Color: Green
• Certifications: CE, UN38.3, and MSDS compliant
• Durability: Constructed with high-impact ABS and polycarbonate plastic for enhanced strength and resilience
• Performance Guarantee: Guaranteed to perform at 80% of original capacity for 12 months
• Compatibility: Suitable for various models, including Honeywell 300-03866, Lynx 5100, Lynx 5210, Lynx Touch 7000, LYNXRCHKIT-SHA, Lyric Controller, Lyric Keypad LCP500-L, LCP500-4B, Lynx 5200, Lynx Touch 5210

These batteries are engineered to meet or exceed OEM specifications, providing a cost-effective and dependable power solution for your devices.

Frequently Asked Questions

Whether you're shopping for a high-performance wireless battery pack or need help understanding your order, we're here to assist. Below you'll find answers to the most common questions.

Product & Warranty

Do you sell OEM batteries?
No. We offer premium aftermarket batteries engineered to be fully compatible with OEM equipment. Each product is tested for safety, reliability, and performance.

Will using a third-party battery void my device warranty?
Absolutely not. Under the Magnuson-Moss Warranty Act (U.S. law), using aftermarket parts like ours will not void your warranty unless proven to cause damage.

What kind of warranty do you offer?
All ElektroEdge batteries include a 12-month limited warranty, covering manufacturing defects under normal use.

Do you have a money-back guarantee?
Yes. We offer a 30-Day Money Back Guarantee. If you’re not satisfied with your purchase, you can return it within 30 days of delivery for a full refund (conditions apply).

Shipping & Returns

When will my order ship?
Orders typically ship within 2–5 business days, depending on stock and Hazmat regulations.

How long does shipping take?
Standard U.S. delivery takes 2–9 business days.

How do I track my order?
Once your order ships, you’ll receive an email with tracking information. Hazmat items shipped via USPS may have a tracking delay of 2–4 days.

Can I cancel my order?
Yes—orders can be canceled before they ship for a full refund. If already shipped, please use our return process.

How are Li-Ion and Li-Polymer batteries shipped?
Due to Hazmat restrictions, these are shipped via ground only. Air shipping is required for orders to Alaska and Hawaii.

Do you ship internationally?
Yes. We ship internationally, including to Canada via UPS Ground. Please note: international buyers are responsible for duties, taxes, and brokerage fees.

Battery Care & Maintenance

How do I extend battery life?

• Fully charge and discharge new batteries 2–3 times
• Condition NiMH/NiCd batteries monthly
• Store batteries in a cool, dry environment
• Clean contacts regularly with a dry cloth

How long will my battery last?
Typically 1.5 to 3 years, depending on usage and conditions.

What are battery connection types?

• Series: Increases voltage
• Parallel: Increases capacity (Ah)

Battery Knowledge

What's the difference between NiMH, NiCd, and Li-Ion?

• NiMH: High capacity, no memory effect, eco-friendly
• NiCd: Prone to memory effect, contains toxic metals
• Li-Ion: Lightweight, no memory effect, widely used today

What is the "Memory Effect"?

This affects NiCd batteries, reducing capacity over time when not fully charged or discharged.

What does battery capacity mean?

It refers to how much energy a battery stores, measured in mAh (Milliamp-hours) or Ah (Amp-hours).

What is battery chemistry?

It describes the chemical composition that powers the battery—e.g., Li-Ion, NiMH, or NiCd.

What is voltage?

Voltage is the electrical pressure that powers your device. Using the correct voltage is crucial to safety and performance.

Charging & Usage

What's the difference between a Rapid and Trickle Charger?

• Rapid Charger: Charges up to 80% in 1–2 hours
• Trickle Charger: Slower (10–12 hours), ideal for overnight charging

How should I charge my battery?

Use an automatic charger. Insert the battery, wait for the red (charging) light to turn green (fully charged). The charger then enters maintenance mode.

What is a battery cycle?

One full charge + discharge = 1 cycle. Most batteries are rated for a specific number of cycles (e.g., 300–500).

Smart Batteries & Chargers

What are Smart Batteries?

These batteries communicate with smart chargers to display real-time data on performance and health.

What are Smart Chargers?

They go beyond charging—displaying battery health, adaptive reconditioning, and maintenance alerts.

What’s the difference between standard and smart chargers?

• Standard Rapid Chargers: Fast but basic—no diagnostics
• Smart Chargers: Feature LCD displays and monitor battery condition and lifespan

What is an Intrinsically Safe (IS) battery?

IS batteries are designed for use in hazardous environments—safe to use around flammable gases or dust.

Still Have Questions?

We’re here to help. Contact us:

Phone: +1 (302) 303-9904

Email: service@elektroedge.com

Address: 600 N Broad Street, Suite 5 #3496, Middletown, DE 19709, United States

Support Hours: Monday – Friday | 9:00 AM – 5:00 PM EST

ElektroEdge.com – Your Trusted Partner in Power