Simplex Simplex-4208A 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 | 35 AH
Terminal Type
Nut & Bolt
Simplex simplex-4208A Replacement Battery (Compatible with simplex-4208A)
Get dependable power for your Simplex systems with the Simplex simplex-4208A replacement battery. Designed for direct compatibility with the simplex-4208A model, this sealed lead acid unit delivers reliable performance, safety, and a long expected service life. Ideal for backup and mission-critical applications, this replacement battery restores consistent, professional-grade power where you need it most.
Key Specifications
- Brand: Simplex
- Model: simplex-4208A (replacement battery compatible with simplex-4208A)
- Type: SLA (Sealed Lead Acid) / VRLA (Valve-Regulated Lead Acid)
- Volts: 12 V
- Amp Hours: 35 AH
- Terminal: NB (Nut & Bolt)
- Weight: 24.7 Lbs
- Length: 7.72 In
- Width: 5.14 In
- Height: 6.14 In
- Design: High discharge design
- Operating Range: Wide operating temperature range
- Technology: VRLA sealed battery technology (safe to operate in any position)
- Certifications: UL (Underwriters Laboratories) certified
- Package contains: 1 battery
- Warranty: 1-year Warranty
- Shipping: ETD 3 Business Days; Shipping Methods – UPS Ground and USPS; We ship in 1 business day for all in-stock items
- Compatibility: Guaranteed compatibility with original battery; meets or exceeds original manufacturer specifications
Benefits
- Dependable Durability: The VRLA construction and high discharge design make this replacement battery a rugged, maintenance-free choice that resists leaks and vibration.
- Extended Lifespan: Engineered as a long-lasting battery, it provides sustained performance over many cycles, reducing the need for frequent battery changes.
- High-Performance Capability: Providing 12 V and 35 AH, this high-performance battery handles demanding loads and provides reliable power for continuous or peak-use scenarios.
- Wide Temperature Tolerance: Built to operate across a broad temperature range, it performs reliably in diverse environments—from controlled interiors to challenging industrial spaces.
- Safety and Certification: UL certification and sealed VRLA technology ensure safe use near people and sensitive components, making it suitable for commercial and residential installations.
- Ideal Applications: Well-suited for fire and safety systems, UPS backups, emergency lighting, security systems, and power tools that require a consistent and trustworthy replacement battery.
- Simple Installation: NB terminal configuration and guaranteed compatibility with the original simplex-4208A model make installation quick and straightforward.
Replace your failing unit now — purchase the Simplex simplex-4208A replacement battery to enjoy fast, reliable power with UL certification and a 1-year warranty. Order today for quick shipping and restore dependable operation to your equipment.
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