Replacement Battery 84598-01 82742-01 for Plantronics Savi W740, W745, W440, W445, WH500, CS540XD, W02 Wireless Headsets
Quick take
This is a rechargeable replacement battery intended for specific Plantronics Savi and related wireless headset models, using manufacturer part numbers 84598-01 and 82742-01. Buyers typically choose it to bring a tired headset back to usable talk time and find the swap process simple. The main caveat is that real-world runtime can still depend on how heavily you use the headset, especially during long phone sessions.
Pros and cons
Pros
- Made for a defined set of Plantronics models, including Savi W740, W745, W440, W445, WH500, CS540XD, and W02
- Designed as a quick replacement, pop out the old battery and slide in the new one
- Rechargeable, 3.7V DC battery option for the compatible headsets
- Multiple users report improved battery life and fewer low-power warnings after replacing
Cons
- Compatibility must be exact to the headset model and battery part number
- Some users report runtime can be shorter with heavier day-long or frequent calling
What buyers think
Buyer-review evidence points to this replacement battery doing its job for restoring day-to-day headset use. Many users describe getting “new life” back into their Plantronics Savi headset, with talk time improving compared to a failing or sub-par original battery. Several comments also mention that low-power beeps or low-charge behavior was reduced or delayed after installation. Where feedback gets more nuanced, it’s around real-world runtime variability, with at least some users seeing shorter battery life during more intensive calling patterns. There is also limited but relevant feedback about small physical or feature differences, such as button or indicator behavior compared with the original.
Who this replacement battery is best for
- Office and home workers using a compatible Plantronics wireless headset who need to regain practical talk time without replacing the headset itself.
- Plantronics Savi headset owners whose battery has started dying faster, giving low-power alerts sooner, or no longer lasting through a typical shift.
- DIY replacers who prefer a simple battery swap (rather than buying a whole new headset) and can match the correct battery part number.
Who should avoid it
- Buyers with an incompatible headset model. This battery is intended for a specific list of Plantronics models and exact battery part numbers.
- People who need predictable talk time across extreme usage. Review evidence suggests heavier phone time can reduce runtime compared to lighter use.
Compatibility and key specifications to check before buying
Before you click, confirm your headset model matches the intended compatibility list. This replacement is designed for Plantronics wireless headsets including:
- Savi W740, W745, W720 (listed), W440, W445
- WH500 (and WH500A listed)
- CS540XD
- W02 wireless cordless headset
It is associated with manufacturer part numbers 84598-01 and 82742-01 (also listed as 204755-01). It uses a 3.7V DC rechargeable battery design, intended for battery-powered headset operation.
Installation experience and day-to-day usability
The overall theme in buyer feedback is that swapping the battery is straightforward. Users commonly describe the process as removing the old battery and sliding in the new one. For most buyers, that simplicity is a big reason they choose a battery replacement rather than upgrading the entire headset.
One practical tip based on limited feedback: the connector or clip can be a little fiddly during installation, so take your time to ensure the battery is seated securely and is making proper contact.
Battery life expectations, realistically
Many buyers report meaningful improvement after installation, including longer stretches before low-power alerts. However, runtime is not guaranteed to be identical to what you remember from the original battery when it was brand new. Some users describe sessions where the headset can still go dead after extended calling, which suggests that actual talk time will vary depending on how long and how frequently you use the headset in a given day.
Pros and cons (expanded)
Pros
- Restores headset functionality: buyers commonly use this when their Plantronics headset battery no longer lasts.
- Simple swap: designed for easy replacement, pop out the old battery and slide in the new one.
- Correct voltage for the compatible headsets: 3.7V DC battery specification for intended operation.
- Better-than-before performance: multiple reviews mention improved hold charge and fewer low-battery beeps.
Cons
- Model matching is non-negotiable: if your headset is not on the supported list (or the part number does not match), you may not get the fit or performance you need.
- Heavier use can shorten runtime: some feedback indicates reduced talk time during intense calling.
Value: when a battery replacement makes sense
If your headset itself is still comfortable and working, replacing only the battery is often the most cost-sensitive way to extend the life of your setup. This battery is a fit-focused option for specific Plantronics models, and buyer feedback suggests it can bring back everyday usability without turning the headset into “e-waste.”
It’s most cost-effective when your current headset issues are battery-related, not audio-related (for example, not problems with the microphone or headset speaker).
Verdict
Choose this Replacement Battery 84598-01 82742-01 if you have a compatible Plantronics Savi or related wireless headset model and your current battery no longer lasts or triggers low-power warnings too quickly. Based on buyer feedback, it’s a practical, easy swap that can significantly improve usable talk time. Just be sure to verify exact compatibility, and keep expectations realistic for very heavy phone usage.
FAQs
Is this replacement battery compatible with all Plantronics headsets?No. It is intended for specific compatible wireless headset models and matching battery part numbers (including 84598-01 and 82742-01, and also listed 204755-01). Check your headset model and battery part number first.
How hard is it to replace the headset battery?Buyer feedback suggests it is a straightforward process: remove the old battery and slide in the new one. If there is a clip or connector involved, take your time to make sure it seats securely.
Does this battery restore the same talk time as a brand-new original battery?Many users report longer battery life and fewer low-power beeps after replacement, but real-world runtime can still vary, especially with heavy calling.
What voltage is this battery?The battery is listed as 3.7V (DC).
Will it work if my headset has a low battery warning or beeps?That’s typically the reason buyers replace a battery. If your issue is primarily battery performance, this replacement is designed to restore normal operation for compatible headsets.
Specifications
| Product Title | Replacement Battery 84598-01 82742-01 for Plantronics Savi W740, W745, W440, W445, WH500, CS540XD, W02 Wireless Headsets Headphones Repair |
|---|---|
| Category | Electronics > Accessories & Supplies > Telephone Accessories > Batteries |
| Brand | WirelessFinest |
| Manufacturer | WirelessFinest |
| Model Name | Battery |
| Item Weight | 0.02 Kilograms |
| Connector Type | wireless |
| Compatible Devices | Headset |
| Compatible Phone Models | Plantatronics 82742-01, 84598-01, 204755-01 |
| Output Voltage | 3.7 Volts (DC) |
| Power Source | Battery Powered |
| Portable | Yes |
| Power Plug | No Plug |
| Current | DC |
| Connectivity Technology | wireless |
| Number of Items | 1 |
| Unit Count | 1.0 Count |
| Built-In Media | 1 x Battery |
| Mfr Part Number | 84598-01 |
| UPC | 688957657616 |
| Included Components | 1 x Battery |
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