National Battery NBX12-500 High Performance UPS Replacement
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🔹 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 | 145 Ah
Terminal Type
Internal Thread
Replacement National Battery NBX12-500 — Compatible NBX12-500
The replacement National Battery NBX12-500 is a compatible UPS battery engineered for reliable high-rate discharge performance. Designed as a direct replacement for the NBX12-500, this battery offers maintenance-free operation, low self-discharge, and a rugged construction that supports both standby and cycle service. If you need a long-lasting battery to protect critical systems, the NBX12-500 replacement battery delivers dependable power and proven durability.
Key Specifications
- Model: National Battery NBX12-500 (Replacement)
- Voltage: 12 Volts
- Amp-hours: 145 Ah
- Watts per cell: 491 Watts per cell on 15-min rate at 1.67 Volts
- Self-discharge rate: Less than 3% per month
- Expected life in standby use: Up to 10 years
- Cycle life: Up to 300 cycles at 100% discharge in cycle service
- Technology: Absorbent Glass Mat Technology (AGM)
- Case: ABS (UL94 V-0) flame retardant case
- Construction: Spill Proof Construction; No-leak construction; Can be operated in any position
- Terminal: Internal Thread
- Warranty: 3 Year Warranty
- Certifications: UL Listed
- Condition: Brand New, Factory Fresh
- Brand/Supplier text: Enersys
Benefits
This replacement battery is optimized for longevity and reliable high-current response. The AGM construction and the low self-discharge rate help ensure the battery is ready when you are, while the robust ABS UL94 V-0 casing and spill-proof design provide extra safety and durability in enclosed equipment rooms. The NBX12-500’s high-rate capability (491 W per cell at the 15-minute rate) makes it a suitable high-performance battery for UPS and emergency power systems where immediate energy delivery is essential.
Typical applications include uninterruptible power supplies, communication systems, and other mission-critical installations requiring a dependable standby source. It also performs well in cycle applications for controlled discharge and recharge scenarios up to 300 cycles at full discharge. The internal thread terminal supports secure mounting and reliable connections in standard trays and cabinets, and each unit ships brand new and factory tested with a 3-year warranty for added assurance.
Don’t wait until power fails — buy this replacement National Battery NBX12-500 high-performance battery now and secure long-lasting protection for your critical equipment. Order today for fast shipping and reliable backup power.
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Payment & Security
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