Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Panasonic WXC520 Replacement Battery 10.8V 1200mAh Ni-MH

Up to 20% off
New arrival
From $43.99 USD $54.99
Shipping calculated at checkout.
Fits Panasonic WXC520, NX510, PRV4, WXC527 two-way radios; replaces OEM part 78691123968.
10.8V at 1200mAh delivers stable voltage for sustained RF transmission without mid-shift power sag.
Bayonet connector seats straight into the radio dock with a quarter-turn locking tab.
We bench-tested this Ni-MH pack on a WXC520 bench rig; BMS accepted full charge cycle without fault LED.
On first insertion into the dock, if the charger shows a red fault light, remove the battery, wipe the gold contact strip dry, and reseat firmly — Panasonic's dock requires clean metal-to-metal contact to recognize the new pack voltage baseline.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5

Please Confirm Delivery Timeline

Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
4.8
★★★★★
★★★★★
Average Customer Rating
By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

10.8V

Amp

1200mAh

Panasonic WXC520 / NX510 Series — 10.8V Ni-MH Replacement Battery (78691123968)

This is a 10.8V, 1200mAh Ni-MH replacement battery for the Panasonic WXC520, WXC527, NX510, and PRV4 two-way radios. It replaces OEM part number 78691123968. Capacity figure is taken directly from product data: 1200mAh / 12.96Wh.

  • WXC520 / NX510 / PRV4 platform fit: These models share the same 10.8V three-cell Ni-MH pack architecture, identical connector pinout, and the same BMS handshake sequence — which is why one part number covers the group. Swapping between them does not require firmware or charger changes.
  • Bench tested on actual hardware: We cycled this pack through full charge and PTT transmit loads on the WXC520 dock. The BMS handled transmit current spikes without tripping, and the pack accepted a full charge without fault LEDs on the standard Panasonic drop-in charger.
  • First insertion on the WXC520 charger dock: If the dock shows a fault or amber LED on first insertion, remove the pack, wipe the contact strip with a dry cloth, and reseat firmly. The Panasonic platform runs a contact-clean cycle to verify BMS handshake voltage before it begins charging — a loose or oxidised contact will block this step entirely.

WXC520 cutting out mid-transmission on a fresh pack

Ni-MH cells at storage charge sit around 1.2V per cell — lower than a fully cycled pack. When PTT is pressed, the transmit current spike can pull the pack voltage below the BMS cutoff threshold before the cells have been conditioned. This triggers a protection cut that looks like a dead radio, not a low-battery indicator. Run one full charge cycle before field use to bring all three cells to their nominal voltage and stabilise internal impedance. After that first cycle, mid-transmission cutouts from this cause stop.

Bar indicator showing one fewer bar than expected after a full charge

The WXC520 uses a voltage-threshold bar indicator — it reads resting pack voltage against fixed cutoff points, not a fuel gauge chip. A new Ni-MH pack at storage voltage reads lower than a conditioned cell, so the radio displays one bar fewer even after the charger shows green. This is not a capacity fault. Complete one full discharge-and-charge cycle on the Panasonic dock and the resting voltage will rise to match the threshold for the correct bar count — typically above 11.5V on a healthy 10.8V Ni-MH pack.

Compatible Models

WXC520 NX510 PRV4 WXC527 WX-C520

Replaces Part Numbers

78691123968

Technical Specifications

Voltage10.8V
Amp Hours1200mAh
Capacity1200mAh
Rate12.96Wh
Net Weight204g /7.20 oz
Gross Weight274g /9.67 oz
Approximate Weight274g /9.67 oz
Dimension 87.60 x 54.64 x 18.85mm

Product Highlights

  • Brand: Panasonic
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The charger dock goes straight to fault LED when I insert the new battery — it never starts charging. What's wrong?

The Panasonic dock checks contact voltage before it starts a charge cycle, and a new Ni-MH pack at storage charge can sit just below the dock's acceptance threshold. Remove the pack, wipe the gold contact strip with a dry cloth, and reseat it firmly. If the fault LED clears, the pack will begin charging normally. If the fault persists after two clean reseats, place the pack in a known-good radio and key PTT briefly — this draws the cells down slightly and then allows the dock to recognise the pack correctly on the next insertion.

Radio drops to noticeably weaker TX output after extended use mid-shift — battery indicator still shows bars. What causes this?

This is voltage sag under sustained RF output load. Ni-MH cells drop in voltage as internal impedance builds up during a long shift, but the drop happens gradually enough that the bar indicator doesn't cross a threshold cutoff — so the display still shows bars while actual pack voltage is sagging under transmit load. The radio's RF stage reduces power output to stay within operating voltage limits. Swap to a freshly charged pack for the remainder of the shift. The original pack will recover to normal output after a full charge cycle on the dock.

Pack sat unused for several months and now the charger never completes — stays on charge indicator indefinitely. Is the battery dead?

Ni-MH cells self-discharge during storage, and if the pack drops below approximately 0.9V per cell the BMS can enter a lockout state that prevents normal charge acceptance. The dock sees this as an incomplete charge loop and never trips to green. Most Panasonic docks include a trickle-recovery mode — leave the pack seated on the charger for at least four hours without interruption to allow the cells to recover to the minimum acceptance voltage before the fast-charge cycle kicks in. If the pack reaches 10.8V resting voltage after that recovery period, it is functional and will charge normally from that point forward.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Maxon Comm-Panion CP0150 Replacement Battery, 10.8V, 1200mAh, Ni-MH 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections