I need a battery for att b183342 that has 550 mah but can't find one. they only have 400 mah. can i use that or a 700 mah?

MAH (mill amp hours) is a measure of the strength of a battery in time, not the voltage or current it develops while working within its charge capabilities. A 700 mah battery will put out its rated energy a little longer than a 600 mah or a 400 mah battery. It will put out 700 milli-amps for one hour under a specific load for one hour, where a 400 milli-amp battery will put out 400 mill-amps under the same load for one hour until it starts loosing it charge below a set level. You can use either a 400, 550, 600 or 700 mah battery. The only difference is that the larger mah battery will last longer on a charge. In a phone that sits in the cradle and is constantly charged, it should make little difference unless you have super extended conversations.

Are these batteries appropriate for replacing at&t ? 3 piece cordless phone set el52315

We ordered these for AT&T phone set el52351 whick looks very similar to yours, and these batteries fit and work fine. Too bad they only sell these in sets of 2 or 4!

is this the right battery for V-Tech CS6729?

Most of the batteries that are shaped like these work in a wide variety of phones. I have a V-Tech 6719 and it was good in there. Problem is they are all made in China and I could not find one with a USA label. Chinese batteries, in general, can be questionable. If you get 2 years out of it, you are doing fine. They are Nickel metal hydride batteries which is a step above Ni-Cads of days gone by.

do i need to charge these first before using?

Yes if your battery discharges fast or is weak Yes but make sure to give them a 8 hr charge before using them.will charge in the deck.

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BT162342 BT262342 Battery Compatible with for BT183342 BT283342 BT166342 BT266342 VTech CS6114 CS6419 CS6719 at&T EL52300 CL80111 Cordless Phone (Pack of 2)

Product ID: 389457278

Details

Number of Batteries
1 AAA
Brand
BAOBIAN
Battery Cell Composition
NiMH
Battery Capacity
600 Milliamp
Recommended Uses For Product
Phone
Voltage
2.4 Volts

⚡2.4V reliable voltage

🔋600mAh NiMH power

♻️Eco-friendly rechargeable

Description

🔋 Stay charged, stay connected — never miss a call again!

DUAL PACK CONVENIENCE - Two batteries included to ensure you’re never caught off guard with a dead phone.
PERFECT 2 4 V VOLTAGE MATCH - Seamless compatibility with your cordless phone models for uninterrupted use.
BROAD COMPATIBILITY SPECTRUM - Works flawlessly with VTech, AT&T, and other major cordless phone brands.
POWER PACKED 600 M AH CAPACITY - Keep your calls going longer with high-capacity NiMH cells.
ECO CONSCIOUS RECHARGEABLE DESIGN - Save money and the planet by reusing batteries instead of replacing phones.

This BAOBIAN BT162342/BT262342 cordless phone battery pack features 2.4V, 600mAh NiMH rechargeable cells designed for extended talk time and reliable performance. Compatible with a wide range of VTech, AT&T, and other cordless phone models, this eco-friendly dual pack offers a cost-effective replacement solution that keeps your devices powered without the need for a full phone upgrade.

Specifications

ASIN	B078W19ZKH
Antenna Location	Phone
Battery Capacity	600 Milliamp Hours
Battery Cell Composition	NiMH
Battery Cell Type	NiMH
Battery Weight	40 Grams
Best Sellers Rank	#136,124 in Electronics ( See Top 100 in Electronics ) #30 in Phone Batteries
Brand	BAOBIAN
Brand Name	BAOBIAN
Compatible Phone Models	bt162342 bt262342 battery pack, bt183342 battery pack, bt183342 bt283342 battery pack
Customer Reviews	4.7 out of 5 stars 2,588 Reviews
External Testing Certification	Não Aplicável
Item Weight Unit of Measure	40 Grams
Manufacturer	BAOBIAN
Model Name	baobian bt162342 Battery
Model Number	BB02162342
Number of Batteries	1 AAA batteries required.
Recommended Uses For Product	Phone
Reusability	Rechargeable
UPC	661596544981
Voltage	2.4 Volts

Reviews

User

Good Replacement

Good replacement batteries, fits and works well

22.11.2025

User

Working fine

27.08.2022

User

Excellent Replacement Product

Used these batteries to replace the old and dying ones in the handsets of a vintage Vtech landline phone. They fit perfectly, installed easily and work great!

6.05.2026

User

Todo bien....

Llegó en el tiempo señalado y hasta el momento a funcionado de manera satisfactoria.

23.01.2023

User

Bonnes batteries

Parfait

7.04.2026

User

Perfect compatibility, works great

These were an exact fit for our cordless phones. Easy swap out with no problems. Came charged. Idk if it takes long to charge. We leave them on the base charger. Last one that failed was 10 yrs old and original

7.11.2025

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