Why You Need This Battery
Your Mitel 5613, 5614, or DT390 DECT cordless phone is a critical communication tool in fast-paced environments like hospitals, hotels, and warehouses. When the original battery starts to fail shorter talk time, unexpected shutdowns, or the handset refusing to hold a charge productivity suffers. Replacing it with a cheap, lowquality battery often leads to false capacity readings, swelling, or failure within months.
This replacement battery solves that problem delivering true 700mAh / 2.6W h capacity with brand new Grade A Li-ion cells. What you see is what you get.
Important Compatibility Check
Compatible Models
Mitel 5613 / 5613/03
Mitel 5614
Mitel 5602 / 5603
Mitel DT390
Ascom D43
Replaces OEM part numbers:
Common P/N
5613/03/DT390
BKB201010/1
FA01302005
FA83601195
660177 R1A
Specifications
You Can Trust
Specification Detail
Model CP-MTL01 / CS-ERT390CL Compatible
Chemistry Li-ion
Voltage 3.7V
Capacity 700mAh / 2.6W h
Color Blue
Safety Standards CE, FCC, RoHS
Condition Brand new Grade A cells
Warranty 30day return + 12month warranty
What a Cheap or Failing Battery Costs You
Interrupted calls Phone dies during critical communications.
Short talk time Handset lasts only a few hours between charges.
Swelling Dangerous bulging that can crack the phone housing.
System errors Inaccurate battery percentage readings and unexpected power-offs.
What Our Battery Delivers
Feature Cheap Generic Our Premium Battery
True Capacity Often under 600mAh 700mAh (tested)
Cells Recycled or lowgrade Brand new Grade A
Talk Time 46 hours 810+ hours
Swelling Risk High within months Low, proper BMS
Safety Standards None CE, FCC, RoHS
Warranty None or 30 days 30day return + 12month
Who Is This Battery For?
Healthcare workers using Mitel 5613/5614 phones for patient communication.
Hospitality staff relying on DT390 cordless handsets.
Warehouse and logistics teams using DECT phones for daily operations.
IT departments managing fleets of Mitel and Ascom cordless phones.
Anyone whose original battery is swollen or no longer holds a charge.
Why Choose Our Battery?
Genuine Grade A Li-ion cells Not recycled or refurbished.
Exact OEM specifications Matches original 3.7V / 700mAh design.
Advanced safety protection Overcharge protection built in.
100% tested Each unit is tested for capacity and cycle life before shipment.
12month warranty Buy with confidence. If anything goes wrong, we've got you covered.
Installation Note
Power off your Mitel or Ascom DECT handset.
Open the battery compartment (slide the latch or clip on the back).
Remove the old battery and insert the new one.
Replace the back cover and charge for at least one hour before first use.
For best performance, fully charge the battery before using it for the first time. The battery is fully charged within four hours. To extend battery life, avoid frequent deep cycling and charge before it drops below 20%.
What's Included
1 x Replacement Battery (700mAh / 3.7V )