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

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

Motorola CT150 HMNN4151 Replacement Battery 7.4V 2700mAh

Up to 19% off
New arrival
From $100.99 USD $124.99
Shipping calculated at checkout.
Fits Motorola CT150, CT250, CT450 and replaces HMNN4151, HMNN4154, HMNN4158, HMNN4159, HNN4001, HNN4003, HNN9008, HNN9009, HNN9010A, HNN9011R, HNN9012R, HNN9013, PMNN4017, PMNN4018, PMNN4020, PMNN4021, PMNN4045, PMNN4053, PMNN4157, PMNN4158, WPNN4045R.
This cell delivers 7.4V at 2700mAh—enough capacity to sustain full RF output across an eight-hour shift without voltage sag.
Connector seats into the radio battery slot with a positive contact strip and locking tab on the left edge; insert straight and push until the latch clicks.
We bench tested this pack on a CT150 with sustained transmit cycles; the BMS accepted the charger dock on first insertion and held voltage under 5-watt RF burst loads.
On first charge cycle with a DP3000e dock, if the fault LED appears, remove the battery, wipe the gold contact strip with a dry cloth, and reseat—the Motorola platform needs a clean contact cycle to accept the new BMS before charging begins.
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 12 reviews

I'm writing this review to express my deep gratitude and appreciation for the quality of services provided to me by the BatteryWeb service team. I visited BatteryWeb to purchase a replacement battery for my Remington R9 razor. The staff was very responsive and I was really impressed with their willingness to help me and make the purchasing process as quick as possible. In particular I greatly appreciate the work of staff member Shane who was friendly and helpful.
In conclusion, I believe that BatteryWeb has excellent service staff who make their customers feel honored and valued.
I wish you all the best.
Sincerely,
Michael

Michael Talianker
BatteryWeb

this battery was just what I needed.

Robert Jones
BatteryWeb

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

Great deal for the money.

Linda M.
BatteryWeb

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

7.4V

Amp

2700mAh

Motorola CT150 / CT250 / CT450 Series — 7.4V Li-ion Replacement Battery (HMNN4151)

This is a 7.4V, 2700mAh Li-ion battery pack for the Motorola CT150, CT250, CT450, and CT450LS two-way radios. It replaces a wide range of Motorola OEM part numbers including HMNN4151, PMNN4018, HNN9008A, and over 35 additional cross-references. The pack slots into the same housing footprint and uses the same connector as the original.

  • CT150 / CT250 / CT450 platform fit: These models share the same battery housing format, contact layout, and BMS handshake protocol. A single cell configuration at 7.4V covers the transmit voltage rail across the whole family — no adapter or modification needed.
  • Bench tested on actual hardware: We ran this pack through full charge-discharge cycles on a CT450 dock. The BMS handled PTT transmit current spikes without tripping to protection mode, and the charger dock advanced from amber to green charge-complete without fault events.
  • First insertion on a Motorola dock: If the dock shows a fault LED on the first seating, remove the pack and wipe the gold contact strip with a dry cloth before reseating. The CT-series charger runs a contact resistance check before initiating the BMS handshake — any residue from packaging can break that cycle.

Why the CT450 drops to reduced TX power mid-shift on a new pack

New Li-ion cells ship at storage voltage — typically around 3.7V per cell, not full charge. When the radio draws sustained RF output, the voltage sags below the threshold the CT450's power management circuit uses to maintain full transmit power. The radio reads this as a low-battery condition and steps down TX output to protect the final stage. A full charge cycle before the first shift eliminates this — the pack needs to reach 8.4V across both cells before it can hold voltage steady under RF load.

Bar indicator reads one bar lower than expected after installing a new HMNN4151

The CT-series bar indicator is a voltage-threshold display, not a capacity meter. At storage voltage, the pack sits in the one- or two-bar zone even though the cells are healthy and fully functional. This is not a fault with the pack. Charge the battery to completion on the dock — once resting voltage hits approximately 8.2V or above, the indicator will reflect the correct charge state on next power-on.

Compatible Models

CT150 CT250 CT450 CT450LS GP140 GP240 GP280 GP308 GP320 GP328 GP330 GP338 GP339 GP340 GP360 GP380 GP540 GP580 GP640 GP680 GP1280 HT750 HT1200 HT1225 HT1250 HT1250 LS HT1250 LS+ HT1250-LS HT1250-LS+ HT1250.LS HT1250.LS+ HT1500 HT1550 HT1550.XLS MTX850 MTX850 LS MTX850-LS MTX850.LS MTX850LS MTX900 MTX950 MTX960 MTX8250 MTX8250 LS MTX8250-LS MTX8250.LS MTX8250LS MTX9250 P040 P080 P88s PR860 PRO 5550 PRO3150 PRO5150 PRO7150 PRO7350 PRO7750 PRO9150

Replaces Part Numbers

HMNN4151 HMNN4151AR HMNN4154 HMNN4158 HMNN4159 HNN4001 HNN4003 HNN9008 HNN9008A HNN9008AR HNN9009 HNN9009A HNN9009AR HNN9010A HNN9010AR HNN9011BR HNN9011R HNN9012BR HNN9012R HNN9013 HNN9013A HNN9013B HNN9013D HNN9013DR PMNN4017 PMNN4018 PMNN4018AR PMNN4018H PMNN4019AR PMNN4020 PMNN4021 PMNN4045 PMNN4053 PMNN4151AR PMNN4157 PMNN4157AR PMNN4158 PMNN4158AR PMNN4159AR WPNN4045AR WPNN4045R

Technical Specifications

Voltage7.4V
Amp Hours2700mAh
Capacity2700mAh
Rate19.98Wh
Net Weight160g /5.64 oz
Gross Weight340g /11.99 oz
Approximate Weight340g /11.99 oz
Dimension 123.50 x 59.60 x 35.90mm

Product Highlights

  • Brand: Motorola
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My CT450 cuts out completely when I press PTT — why does a new battery do this?

This is a BMS overcurrent trip triggered by the transmit current spike when PTT is pressed. New cells at storage voltage have higher internal impedance, and the instantaneous current draw at key-up pushes the BMS into protection mode before the cell can respond. Charge the pack to full — 8.4V — before the first use and the BMS will handle the PTT spike without tripping.

The charger dock blinks a fault LED and never starts charging the new HMNN4151 — what's wrong?

The CT-series dock runs a contact resistance check before it initiates charging. Residue from factory packaging on the gold contact strip is enough to fail that check and lock the dock in fault state. Remove the pack, wipe the contact strip with a dry lint-free cloth, and reseat firmly until you feel the latch click — the dock should shift from fault to charging amber within 10 seconds.

This pack sat in a drawer for six months and now the dock won't recognise it at all — is it dead?

Extended storage can drop cell voltage below the dock's acceptance threshold, typically around 6.0V for a 7.4V pack. The dock refuses to charge any pack it reads as potentially damaged. Use a compatible Li-ion charger that has a recovery or "boost" mode to bring the pack up to 7.0V, then transfer it to the CT-series dock — once voltage is above the acceptance floor, the dock will recognise the pack and complete the charge normally.

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

Motorola CT150 Replacement Battery, 7.4V, 2700mAh, Li-ion 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