L12S4E01 Battery for Lenovo G400s G500s G50-70 G50-80 Z710 | 14.8V 2600mAh 38Wh

Detailed Product Specifications and Features:

 

Core Technical Parameters:

Property	Specification
Model Numbers	L12S4E01 / L12M4E01 / L12L4E01
Battery Type	Li-ion (Grade A+ High-Quality Cells)
Voltage	14.8V (Fully compatible with 14.4V)
Capacity	2600mAh / 38Wh
Cells	4-Cell
Condition	100% Brand New from Factory
Life Cycle	600 - 1000 recharge cycles
Multiple Protection	Over Current, Over Voltage, Over Charge & Discharge, Overheat, Short Circuit, ESD, EMI
Color	Black
Certifications	UL2054, CE, FCC, RoHS, UN38.3, MSDS, IEC62133
OEM/ODM	Yes(Accepted)
Warranty	18 Months After Sales, 24/7 Email Support.
Product Dimensions	16.14 x 4.92 x 1.57 inches
Item Weight	1.76 ounces

Technical Note:

Design Note: The L12S4E01 is a high-stability External Removable battery pack. The HTJ 14.8V version is engineered with a precision-tuned Battery Management System (BMS) to handle voltage regulation across the Lenovo G and Z series architectures, ensuring no “Battery Not Detected” errors even after Windows or BIOS updates.

Product Features:

• Battery Newest Premium Grade Cells
• Best Circuit Board
• Multiple command chip control, keep the battery stable charge and discharge;
• Over-charger protection and discharger protection, short-circuit protection, ensure fast charges and low power consumption
• Easy & Quick Installation
• Our battery is 100% compatible with the original battery and meets
• CE/FCC/ROHS/UL-certified standards. It is 100% new from the manufacturer and can support up to 1000 recharge cycles over the life of the battery
• Power Interface: Gold-plated connector points to ensure current transport excellently and serve stably.
• Enclosure: The enclosure is made of ABS + PC high-quality material, it has high temperature-resistant function to protect your laptop from overheating
• Battery Buckle: The battery buckle is closely connected to the laptop, and the metal interface is stably powered

L12S4E01 / L12M4E01 / L12L4E01 Battery Compatibility Laptop Model List:

Series	Specific Laptop Models & Machine Type-Models (MTM)
Lenovo G Series	G400s / G400s Touch: (Type 20244, 80AC) G405s / G405s Touch: (Type 20245, 80AD) G410s / G410s Touch: (Type 20246, 80AE) G500s / G500s Touch: (Type 20247, 80AF) G505s / G505s Touch: (Type 20248, 80AG) G510s / G510s Touch: (Type 20249, 80AH)
Lenovo G40 / G50	G40-30 / G40-45 / G40-70 / G40-80: (Type 80FY, 80E1, 80H1) G50-30 / G50-45 / G50-70 / G50-75 / G50-80: (Type 80G0, 80E3, 80E5, 80L0, 80EC)
Lenovo Z Series	Z40-70 / Z40-75: (Type 80E6, 80DW) Z50-70 / Z50-75: (Type 80E7, 80EC) Z710: (Type 20250, 80AK)
IdeaPad S Series	S410p / S410p Touch: (Type 20257, 80BK) S510p / S510p Touch: (Type 20258, 80BL)
Lenovo Eraser	Eraser G400s / G500s / G40 / G50 / Z40 / Z50 / Z710 Series
Specific Suffixes	-ITH (i3), -IFI (i5), -ISE (i7), -ATE, -ARE, -AST, -ASW

L12S4E01 / L12M4E01 / L12L4E01 Battery Compatible P/N (Part Numbers) List:

FRU (Field Replaceable Unit) Numbers:

• • L12S4E01, L12M4E01, L12L4E01
  • L12S4A02, L12M4A02, L12L4A02
  • 121500171, 121500172, 121500173
  • 121500174, 121500175, 121500176

ASM (Assembly) Numbers:

• • 90202869, 90202870
  • 121500185, 121500186
  • 121500231, 121500232

Alternative System Codes:

• • 4ICR17/65, 4INR19/66
  • 4INR19/65-2, 4ICR19/66

Why Choose HTJ L12S4E01 14.8V Battery?

• Optimized 14.8V Power Plateau:
  Our 14.8V configuration provides a stable discharge curve, preventing the sudden “Voltage Drop” shutdowns that occur in low-quality 14.4V alternatives when the laptop is under heavy CPU/GPU load.
• Grade A+ Cells for Industrial Longevity:
  HTJ utilizes only high-consistency Grade A+ cells. This ensures that the battery maintains over 80% of its initial capacity even after 500+ full charge cycles, providing years of reliable service.
• Precision 1:1 Safety Fit:
  Using original factory dimensions, our L12S4E01 fits into the Lenovo chassis with zero movement. This prevents accidental disconnections and wear on the motherboard pins.
• Comprehensive 18-Month Warranty:
  As a direct manufacturer, HTJ offers an 18-month warranty. Every battery is subjected to 48-hour aging and high-current validation before shipment.

How to Install Your New L12S4E01 Battery？

Replacing the external L12S4E01 battery is a simple, tool-free process using Lenovo’s dual-latch system.

⚠️Crucial Safety Preparation

• Shutdown: Power off your laptop and disconnect the AC adapter before replacement.
• Surface: Place the laptop upside down on a soft, clean surface to avoid scratching the chassis lid.

L12S4E01 Battery Step-by-Step Installation Guide:

1. Locate the Dual Latches: Find the two sliding latches on the bottom of the laptop near the battery bay.
2. Unlock the Manual Latch: Slide the right-side manual lock latch to the “Unlocked” position.
3. Release the Spring Latch: Slide and hold the left-side spring-loaded release latch.
4. Remove the Old Battery: While holding the release latch, pull the old battery out of the chassis.
5. Insert the HTJ Battery: Align the guide rails of the new HTJ L12S4E01 battery and slide it into the bay until it clicks firmly.
6. Secure the Lock: Important: Slide the manual lock latch back to the “Locked” position to ensure the battery is secured.
7. Verification: Power on the laptop and verify “Battery Health” in Lenovo Vantage or Windows Battery settings.

💡 Pro Tip:

To maximize the lifespan of your new 14.8V cells, perform a full “Battery Gauge Reset” once every 3 months. Charge to 100%, then discharge to 5% to keep the system fuel gauge accurate.

FAQ (Frequently Asked Questions)

Q: Is 14.8V safe if my original battery was 14.4V?
A: Yes. 14.4V and 14.8V are fully interchangeable standards for this Lenovo series. The internal charging controller is designed to handle this variance safely.

Q: Does this battery fit the Lenovo G50-70?
A: Yes, the L12S4E01 is the standard battery for the entire G50-30/45/70/80 series.

Q: Why does my laptop show “Plugged in, not charging” after installation?
A: This is often a software sync issue. Turn off the laptop, hold the power button for 30 seconds (static discharge), then restart with the charger connected.

 

Laptop Maintenance Tips:

1. New battery: For using a new battery, you’d better try a few cycles of discharging to 5%. then charging up to 95%. So that it can be activated completely
2. Overuse: Do not always run a battery to 0%, as this would shorten its usage life.
3. Charging sequence: When charging, first install the battery, then turn on the power. When fully charged, first cut off the power, then pull the power plug.
4. Long-term storage: Please store the unused battery fully charged. (Charge it once a month.) Do not store at low power to prevent reducing the lifespan of a battery
5. Charger: Do not replace the laptop adapter casually. If the original adapter cannot be applied due to malfunction or damage, please replace the models so as not to reduce the service life of the battery due to incompatibility.

 

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