SNSYIY MacBook Pro 13-inch Replacement Battery 66.2Wh (A1708/A2171) — High-Capacity, Protected Charging

Replacement high-capacity Li-ion battery for 13-inch MacBook Pro models (Late 2016–2020) that restores runtime and provides protected charging for busy on‑the‑go use.

If your MacBook Pro no longer holds charge like it used to, the SNSYIY replacement battery is built to bring full-day performance back to compatible 13-inch models. Engineered with a 66.2Wh (5800mAh) Li-ion pack, upgraded battery management, and high-purity cells, this unit is sized to fit A1708/A1713 and later A2171-series machines so you get longer unplugged time without changing adapters or cases.

Which MacBook Pro models will this battery work with?

This battery is compatible with several 13-inch MacBook Pro families from Late 2016 through 2020. Check your model identifier (e.g., MacBookPro13,1 or MacBookPro17,1) or EMC number against the list below before ordering.

• Late 2016 / Mid 2017 A1708 (EMC 2978, 3164) models including Core i5/i7 13-inch units.
• 2019 A2159 (MacBookPro15,4) Touch Bar 13-inch models.
• 2020 A2289 and A2338 models including Intel and M1 13-inch variants.
• Ships as A1713 / A2171 compatible replacement battery for easy identification.

How much longer will my MacBook run on this battery?

The SNSYIY pack offers a larger 66.2Wh capacity compared with many original packs (typically ~54.5Wh), so you should see noticeably extended unplugged use for everyday tasks. Real-world runtime varies by workload and system settings.

• Capacity: 66.2Wh / 5800mAh (higher than many OEM 54.5Wh packs).
• Expected longer operating time for browsing, documents, and light media work.
• Actual battery life depends on apps, screen brightness, and connectivity.

What safety and longevity features are included?

This battery uses high-purity Japanese cells and an upgraded management chip for stable performance and cycle life. Onboard protection circuits guard against overcharge, overdischarge, and short circuit to reduce risk during normal use and charging.

• Japan high-performance cells with >98% cobalt proportion for energy density.
• Upgraded chip supporting efficient charging and low power consumption.
• Protection against overcharge/discharge and short circuits, rated for 1500+ recharge cycles under optimal conditions.

How easy is installation and what should I prepare?

Installation requires basic tools and careful handling of the MacBook internals. If you’re comfortable removing the back plate, disconnecting the old battery, and reconnecting the new one, this replacement will fit directly into supported 13-inch models; otherwise use a qualified technician.

• Requires Pentalobe and tri-point screwdrivers or professional installation service.
• Follow standard ESD precautions and power down the laptop before starting.
• Includes battery with matching connector and mounting points for a direct swap.

Who is this for: Professionals, students, and frequent travelers who own a compatible 13-inch MacBook Pro and need a reliable, higher-capacity replacement to extend unplugged productivity. It’s also suited for technicians and repair shops that want an A‑grade aftermarket battery with improved capacity and built-in protection for resale or installation.