M12-8-115-K Powersport Compatible Replacement Battery
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⚠️ 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.
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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
12 Volts | 8 AH
Terminal Type
Nut & Bolt
NT9B-4 Replacement Battery — Compatible with NT9B-4 (M12 Series)
The NT9B-4 replacement battery is an AGM maintenance-free solution engineered for compatibility, dependable performance, and environmental safety. This NT9B-4 battery ships factory fresh, fully charged and sealed — eliminating messy acid filling and delivering immediate, reliable power. Built for high-rate discharge applications, it provides the quick starts and stable output your motorcycle demands.
Key Specifications
- Model: NT9B-4
- Alternate/Series ID: M12-8-115-K / M12
- Brand: OEM (M12 referenced)
- Voltage: 12 Volts
- Capacity: 8 AH
- Terminal Type: Nut & Bolt
- Design: Absorbed Glass Mat (AGM) — Maintenance-Free
- Safety: Spillproof and Leakproof Design
- Condition: Factory Fresh, Sealed, Fully Charged
- Shipping: Safe for Ground or Air Shipment
- Environmental: 100% Recyclable, Vibrant Resistant Design
- Performance: Designed for High-Rate Motorcycle Discharge
- Warranty: 6 Month Warranty
- Vendor Tag: SigmasTek
Benefits
The NT9B-4 replacement battery delivers a robust, long-lasting battery option for motorcycle owners and technicians. Its AGM maintenance-free construction removes routine maintenance tasks while providing a spillproof, leakproof package that is safe for transport and installation. The battery’s vibration-resistant design and factory sealing support reliable operation in harsh riding conditions, from cold starts to hot climates.
As a high-performance battery, the NT9B-4 offers strong starting capability and steady power delivery for lights, starters, and accessories. It is also an environmentally friendly option — fully recyclable and designed to meet modern shipping safety standards for both ground and air transport.
Typical applications include motorcycle starting systems, powersports, and any scenario requiring short bursts of high current. Additionally, the NT9B-4 is suitable as a compact backup or emergency power source for small devices, and it works well with handheld tools that need portable, reliable power.
Don’t compromise on performance — order your NT9B-4 replacement battery today for a long-lasting battery that’s maintenance-free, factory fresh, and backed by a 6 month warranty. Purchase now to get fast shipping and dependable service.
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