MULS A1577 Tablet Battery Replacement for iPad Pro 12.9 1st Gen

In this review of the MULS A1577 replacement battery, the bottom line is simple: this is a practical, cost-effective way to restore usable life to an iPad Pro 12.9 1st generation that no longer holds a charge. The reviewer found the battery's 10307mAh capacity and 38.8Wh rating deliver noticeably longer run time versus an aged cell, and the included repair tools make the swap feasible for a careful DIYer. This review focuses on compatibility, performance, and the realistic tradeoffs of a third-party replacement.

Key Features

• High capacity: The 10307mAh cell provides substantially more usable runtime for web browsing, video playback, and productivity than many worn original batteries.
• Correct voltage: At 3.77V the battery matches the iPad Pro 12.9 first generation power requirements to ensure stable operation under typical loads.
• Packaged tools: Tools included with the battery make it possible for someone comfortable with small electronics to perform the replacement without buying extra gear.
• Safety protections: The pack includes circuit protections against short circuit, overheat and overcharge which reduce risks during use and charging.
• Quality cells: MULS uses premium battery cells and claims up to 500 charge cycles, aiming for longer longevity than very cheap alternatives.
• After-sale support: The seller offers 12 months after-sale service and 24/7 email support for troubleshooting installation or performance questions.

Who It's For

This battery is aimed at owners of the iPad Pro 12.9 1st generation (models A1584 and A1652 and listed model numbers) who need to replace a failing or dead pack and are prepared to perform or pay for a repair. It is especially useful for users who want to avoid replacing the entire device and prefer a repair that restores battery life and portability.

It is not the best choice for someone uncomfortable opening a tablet, or for users who expect plug-and-play installation without any effort; some customers reported the installation can be tricky. If you need professional installation or prefer manufacturer repair service, consider those options instead.

Pros & Cons

Pros

• Restores long runtime thanks to a high 10307mAh capacity.
• Includes repair tools so buyers do not need extra equipment for replacement.
• Built-in protection circuitry reduces risk compared with unprotected cells.
• Seller support and a 12 month after-sale policy provide reassurance.

Cons

• Installation can be somewhat difficult for users without repair experience, according to multiple customers.
• As a third-party pack, it requires careful model verification before purchase to ensure compatibility.

Specifications

Battery Model	MULS A1577 replacement
Compatible Devices	iPad Pro 12.9 1st generation (A1584, A1652 and listed model numbers)
Voltage	3.77V
Capacity	10307mAh
Wattage	38.8Wh
Included Accessories	Repairing tools packaged with battery
Warranty / Support	12 months after-sale service and 24/7 email support

Our Verdict

The MULS A1577 replacement battery is a sensible, value-oriented fix for owners of the iPad Pro 12.9 1st generation who want to regain battery life without replacing the tablet. Its high 10307mAh capacity, built-in protections and included tools make it a practical DIY option, though buyers should be prepared for a moderately challenging installation and verify their model number before ordering.

Frequently Asked Questions

Will this battery fit my iPad Pro 12.9 1st gen?
It fits iPad Pro 12.9 1st generation models A1584 and A1652 and the specific model numbers listed by the seller; check your device model before purchase.

Does the kit include tools for installation?
Yes, the battery is packaged with repairing tools intended to assist a DIY replacement.

Is the battery safe and durable?
Yes, the pack includes safety protections for short circuit, overheat and overcharge, and the seller states the use of premium cells rated for up to 500 charge cycles.