Welch Allyn 72250

Welch Allyn 72250 Battery (NiCd, 3.6 V, 800 mAh)

The 72250 is a 3.6 V, 800 mAh nickel-cadmium (NiCd) rechargeable battery pack designed for Welch Allyn diagnostic instruments, including the LumiView Ophthalmoscope and selected handles such as model 75260. It provides stable output for consistent illumination in routine and high-volume clinical use.

Key Specifications

• Voltage: 3.6 V
• Capacity: 800 mAh
• Chemistry: Nickel-cadmium (NiCd), rechargeable
• Intended use: Welch Allyn LumiView Ophthalmoscope and compatible diagnostic handles (e.g., 75260)
• Charging: Use only compatible NiCd chargers/charging stands for these handles

When to Choose This Battery

• Use if your Welch Allyn handle specifies a 3.6 V NiCd pack and lists 72250 compatibility.
• Choose for predictable light output with halogen/LED heads in busy clinics.
• Good fit if you need a cost-effective power source with hundreds of charge cycles.

When to Avoid

• Avoid if your instrument requires a lithium-ion pack or a different part number/voltage.
• Not suitable with chargers designed exclusively for Li-ion systems.
• If your facility restricts cadmium-containing batteries, consider approved alternatives.

Runtime and Charging

• Typical runtime per charge: about 30–90 minutes, depending on light source (halogen vs. LED) and intensity settings.
• Standard “overnight” charge on compatible NiCd chargers: approximately 12–16 hours. Follow your charger’s instructions.
• Conditioning: To minimize NiCd memory effect, perform a full discharge/charge cycle every 1–3 months.

Installation

1. Power off the instrument and remove the handle from the head.
2. Unscrew the handle cap, remove the old battery, and note polarity.
3. Insert the 72250 with correct orientation; ensure it is fully seated.
4. Secure the cap, place the handle on the approved charger, and charge before use.

Care and Maintenance

• Charge after use; avoid leaving fully depleted for extended periods.
• Clean battery and handle contacts periodically with a lint-free cloth.
• Store cool and dry. For storage over 1 month, recharge before next use.
• Every 1–3 months, allow a full discharge then fully recharge to help counter memory effect.

Safety and Environmental Notes

• NiCd contains cadmium. Recycle through approved medical/battery recycling programs; do not discard in regular trash.
• Do not short, puncture, incinerate, or expose to high heat.
• Use only with compatible Welch Allyn chargers and handles; mixing chemistries can cause damage.

Compatibility Notes

Before purchasing, confirm the part number on your handle or in the device manual. The 72250 is intended for Welch Allyn LumiView Ophthalmoscope and certain diagnostic handles such as model 75260. It is not interchangeable with lithium-ion handle systems or battery packs requiring a different form factor or voltage.

FAQ

How long will the 72250 run between charges?

Approx. 30–90 minutes per charge, depending on lamp type, brightness setting, and battery condition.

Can I use a Li-ion charger with this NiCd battery?

No. Use only chargers compatible with 3.6 V NiCd Welch Allyn handle systems.

How do I know it’s time to replace the battery?

If runtime drops noticeably despite proper charging/conditioning, or if the battery will not accept a full charge, replacement is recommended.

Do NiCd batteries have memory effect?

Yes, to a degree. Performing a full discharge/charge cycle every 1–3 months helps maintain capacity.

How should I dispose of the 72250?

Recycle through an approved battery recycling program. Follow local regulations for cadmium-containing batteries.