SNSYIY MacBook Pro 13 A1964 A2251 Replacement Battery

SNSYIY A1964 is a direct replacement lithium‑polymer battery for 13" MacBook Pro models A1989 (Mid 2018/2019) and A2251 (2020), delivering 58.19Wh (5100mAh) at 11.41V for longer unplugged use.

If your MacBook Pro’s runtime has dropped or the machine needs constant charging, this SNSYIY replacement battery restores mobile productivity with genuine capacity and updated protection circuits. Built with a high‑performance Japan core and upgraded management chip, the pack is designed for safe charging, consistent power delivery, and a long service life through many recharge cycles. Compatibility covers multiple EMC and model numbers—double‑check your MacBook model identifier before installing.

Which MacBook Pro models does this battery support?

This battery fits specific 13‑inch MacBook Pro configurations released mid‑2018 through 2020. It replaces Apple part numbers A1964 and A2251 and works with listed EMC and model variations—verify the model printed on the original battery or in system information.

• Mid 2018 & 2019: A1989 compatible with EMC 3214 and EMC 3358 (MacBookPro15,2)
• 2020 (Scissor‑switch keyboard): A2251 compatible with EMC 3348 (MacBookPro16,2)
• Check model identifiers like MR9Q2xx/A, MR9R2xx/A and MWP42xx/A series before purchase

How does the SNSYIY battery improve runtime and longevity?

The pack uses high‑grade lithium‑polymer cells and an upgraded battery management chip to deliver the rated 58.19Wh capacity and steady voltage output. The manufacturer cites a Japan high‑performance electric core with a cobalt proportion above 98% for stable chemical performance and optimized cycle life.

• Rated capacity: 58.19Wh (5100mAh) at 11.41V for accurate runtime estimates
• Upgraded internal chip for efficient charging and lower power loss
• Designed for 1500+ recharge cycles under recommended conditions

What safety features and protections are included?

SNSYIY batteries include multi‑circuit protection to prevent overcharge, over‑discharge and short circuits, helping to protect both the battery and your MacBook. The pack is assembled with quality control processes and A‑grade cells to reduce swelling and temperature issues under normal use.

• Overcharger and discharger circuit protection built into the battery pack
• Cell grade assurance and quality checks for consistent capacity
• Lower heat generation and stable voltage during heavy workloads

How easy is installation and what should I prepare?

Installation requires basic laptop repair tools and care: power down, open the lower case, and swap the old pack for the SNSYIY unit using the appropriate screwdriver. If you’re not comfortable opening your MacBook, a professional technician or authorized service provider can install it to avoid accidental damage.

• Turn off the MacBook and disconnect power before starting
• Use proper P‑series and Phillips screwdrivers and an anti‑static mat if available
• Follow a step‑by‑step guide or seek professional installation if unsure

Who this is for: the SNSYIY A1964/A2251 replacement battery is aimed at MacBook Pro 13" owners whose machines have reduced battery life, unexpected shutdowns, or devices that remain tethered to an adapter. It’s suitable for students, professionals, and frequent travelers who need dependable unplugged performance, and for DIYers comfortable with laptop interior work. Always confirm your MacBook’s model identifier and EMC number before ordering to ensure a correct fit.