4 cells 40Wh Dell MR90Y excellent quality battery uses an intelligent control chip, which comes with higher performance and reliability, longer run-time and battery life. Built-in protection circuitry ensures its stability and safety, fast charge but slow power consumption.
6 cells 65Wh Dell MR90Y excellent quality battery uses an intelligent control chip, which comes with higher performance and reliability, longer run-time and battery life. Built-in protection circuitry ensures its stability and safety, fast charge but slow power consumption.
Note : 1. 10.8V and 11.1V are compatible, they are in common use. 2.
14.4V and 14.8V are compatible, they are in common use.3. The 10.8V(=11.1V)
and 14.4V(=14.8V) are the different voltages, they are not compatible, please choose
the right battery(Voltage) for your laptop.
Product Description
Reliable replacement battery for everyday use
Replacement Battery for Dell MR90Y
The Dell MR90Y replacement battery is designed for compatible Dell devices that use the listed battery part numbers and models. It is built with quality battery cells and a protective circuit board to support stable charging, reliable power output and daily use.
Before ordering, compare your original battery part number, voltage, connector position and battery shape with the product photos and compatibility list on this page. If the part number or battery shape does not match, please contact us before placing the order.
Key features of this Dell MR90Y replacement battery:
Quality battery cells for stable capacity and dependable runtime.
The battery is up to standard and fully compatible with original specifications.
Built-in protection against overcharge, over-discharge, overheating, overcurrent and short circuit.
All our Dell MR90Y batteries are certified by CE, UL, ROHS, ISO9001/9002 as safe products.
The interface metal and fixed insulator of the battery are made of good materials to ensure stable current input and durability.
Inspected before dispatch and packed securely for delivery.
30-day return period and 1-year warranty for eligible quality issues.
We specialize in providing reliable replacement batteries for a wide range of devices.
The Dell MR90Y battery Ireland is tested before dispatch to help ensure proper charging, stable connection and dependable power output.
Durable connector contacts and insulating materials are used to support stable current transmission and long-term use.
Each battery is securely packed for delivery and covered by our 30-day return period and 1-year warranty for eligible quality issues.
Battery safety protection
Built-in protection for safer charging and power output
ESD protection
overheating protection
short circuit protection
CHARGING TIME protection
over discharge protection
INTELLIGENT protection
CLASS A protection
overvoltage protection
overcurrent protection
overcharge protection
ELECTROMAGNETIC protection
POWER protection
Product Images
Compatibility
Compatibility note: Please check your original battery part number, model, voltage, connector position and battery shape before ordering. Some laptop models may use different battery versions. If you are not sure whether this battery is suitable for your device, please contact us with your original battery part number and laptop model.
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Warranty & Returns
Dispatch within 24 hours After payment is confirmed, we usually arrange dispatch within 24 hours.
30-day return period If the item is eligible under our return policy, you may request a return within 30 days after delivery.
1-year warranty The Dell MR90Y laptop battery is covered by a 12-month warranty for eligible quality issues.
Secure payment We use secure payment methods to help protect your personal and payment information during checkout.
FAQs
Q: How do I know whether this Dell MR90Y battery is compatible with my laptop?
A: Check the original battery part number, laptop model, voltage, connector position and battery shape. The safest method is to compare your original battery with the product photos and the compatible part number list on this page.
Q: The battery is installed, but the laptop does not turn on. What should I check?
A: Remove the battery and reinstall it firmly. Check whether the battery connector is aligned correctly. If the laptop still does not start, contact customer service with your laptop model, original battery part number and clear photos of the battery connection area.
Q: Why is the new battery not fully charged when it arrives?
A: Laptop batteries are usually shipped with a partial charge for safer storage and transport. Please fully charge the battery before first use.
Q: How should I use the Dell MR90Y replacement battery for the first time?
A: Install the battery, charge it fully, then use it normally. For better long-term battery health, avoid frequently draining the battery to 0%. Charging between around 20% and 80% during daily use can help reduce battery stress.
Q: How should I store the battery if I will not use it for a long time?
A: Store the battery at around 40%–60% charge in a cool, dry place. Avoid full discharge during storage. Recharge the battery about once a month to help prevent deep discharge.
Q: Is this an original Dell battery?
A: No. This is a compatible replacement battery. Brand names, model names and part numbers are used only to show compatibility.
