Long Way LW-3FM12J High Capacity Replacement Battery
Couldn't load pickup availability
⚠️ Quick Reminder
🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.
📸 Send Your Battery Photo / Unsure? Expert Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE
Battery Care Guide
Battery Care Guide
Battery Usage and Maintenance Guidelines 🔋
Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.
1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱
Initial Charge
- Fully charge the battery overnight prior to first use.
Conditioning (First 2–6 Charge Cycles)
- Operate the device until the battery reaches approximately 20% capacity.
- Avoid premature recharging.
- Do not allow the battery to fully discharge during the initial cycles.
Post-Conditioning
- Recharge the battery only when necessary.
- These batteries are capable of approximately 500 charge cycles:
- Once daily → ~500 days
Twice daily → ~250 days
Note: Even a partial recharge is considered a full cycle.
2. Sealed Lead Acid (SLA) Batteries 💡
- No conditioning required.
- Maintain the battery in a fully charged state; avoid complete discharge.
- Capable of 300–400 charge cycles.
- Expected service life: 2–3 years, depending on usage conditions.
3. Laptop Batteries (Lithium-Ion) 💻
Initial Charge
- Fully charge the battery overnight prior to first use.
Conditioning (First 2–6 Charge Cycles)
- Charge fully, then discharge to approximately 20% capacity.
- Avoid complete discharge, as some devices may not detect a fully drained battery.
Post-Conditioning
- Minimize frequent plugging and unplugging.
- Allow the battery to discharge moderately at least once per month to maintain optimal performance.
- Occasional cycling is recommended to sustain battery health.
Professional Recommendation
Adhering to these guidelines will enhance battery longevity and ensure reliable performance.
For further assistance regarding your battery or order, our customer support team is available to provide guidance.
Delivery and Shipping
Delivery and Shipping
⚡ Everything You Need to Know About Shipping with BatteryWeb (USA)
We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:
🚚 Shipping & Delivery
Most orders ship next business day (some products like sealed lead acid may take a little longer).
Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).
We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.
Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.
Transit times shown are estimates only (business days, no weekends/holidays).
🌍 Shipping Restrictions
Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.
PO Box deliveries are only available via USPS.
At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.
📦 Important Notes
Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.
If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.
💲 Currency & Pricing
All prices are shown in USD.
Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.
⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).
Volts & Amps
6 Volts | 12 Ah
Terminal Type
F1
Long Way LW-3FM12J Replacement Battery - Compatible with LW-3FM12J
Upgrade your device with the Long Way LW-3FM12J replacement battery designed for dependable compatibility, strong performance, and proven reliability. This high-performance battery is built to meet or exceed the OEM SLA specifications for the LW-3FM12J model, giving you a maintenance-free, long-lasting battery option for your equipment. Ideal for users who need consistent, spill-proof power, the LW-3FM12J replacement battery combines Absorbent Glass Mat (AGM) technology and factory-fresh construction to deliver stable performance in critical applications.
Key Specifications
- Model: Long Way LW-3FM12J
- Replacement Brand: SigmasTek (replacement for Long Way)
- Voltage: 6 Volts
- Capacity: 12 Ah
- Terminal Type: F1
- Technology: Absorbent Glass Mat (AGM)
- Design: Maintenance-Free, Spill Proof Construction
- Certifications: U.L. Recognized, CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year
- OEM Compatibility: Meets or exceeds OEM SLA specifications
Benefits
The Long Way LW-3FM12J replacement battery offers exceptional durability and a long service life thanks to AGM construction and robust manufacturing standards. As a high-performance battery, it delivers consistent discharge and recharge cycles, making it perfect for frequent-use environments. The maintenance-free, spill-proof design eliminates the need for topping up electrolyte, reduces maintenance time, and improves safety in portable and stationary setups.
Expect high reliability in demanding scenarios — this long-lasting battery is suitable for UPS systems, emergency power backups, alarm systems, medical devices, and a variety of power tools and portable equipment. The UL recognition and CE certification confirm compliance with safety and quality standards, while the factory-fresh condition ensures you receive peak performance from day one. Whether you need a replacement battery for routine maintenance or to restore full capability to critical systems, the LW-3FM12J offers dependable, predictable power.
Ready to replace your old battery? Choose the Long Way LW-3FM12J replacement battery for a high-performance battery option that is dependable, long-lasting, and fully compatible with your LW-3FM12J device. Order now to secure reliable power and a 1 year warranty.
-
Voltage
-
Amp Hours
-
Terminal Type
-
Length (in.)
-
Width (in.)
-
Height (in.)
-
Weight (lb.)
-
Warranty
-
Type
-
Manufacturer
-
Brand Replacement
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.



