APC RBC135 UPS High Performance Replacement Battery Set
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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 | 5.5 Ah
Terminal Type
F2
SigmasTek SP12-5.5HR Replacement Battery Set for APC RBC135
Restore runtime and protect critical systems by replacing worn cells in your APC RBC135 with this replacement UPS battery set. The kit includes two SigmasTek SP12-5.5HR batteries (12 Volts, 5.5 AH) specifically supplied to meet UPS requirements. With a focus on compatibility, performance, and reliability, this long-lasting battery set brings your APC UPS back to life so it can continue safeguarding equipment during outages.
Key Specifications
- Brand: SigmasTek
- Model: SP12-5.5HR
- Quantity: 2 batteries per set
- Voltage: 12 Volts
- Capacity: 5.5 AH
- Design: High Rate Discharge Design
- Construction: Valve Regulated Spill Proof Construction
- Feature: Low Self-discharge
- Feature: High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Compatibility Note: For use in APC RBC135 UPS units — use all existing cables and hardware from original configuration
- Shipping: In-stock items typically ship within 24 hours
Benefits
This replacement UPS battery offers superior durability and consistent performance for sensitive electronics. The high rate discharge design supplies the necessary power during brief, intensive load events, ensuring a smooth transition when mains power is lost. The valve regulated, spill-proof construction lowers maintenance needs and increases safety for indoor installations. Low self-discharge characteristics keep the batteries ready for service after storage, while high vibration resistance helps them withstand mechanical stresses.
Perfect as a high-performance UPS battery for APC RBC135 units, this set is well-suited for uninterruptible power supplies, emergency power systems, and battery-powered tools. Its factory-fresh condition and certifications (U.L. Recognized and CE Certified) give you confidence in product reliability and compliance. If you want a long-lasting battery that returns your APC UPS to full functionality, this SigmasTek set is an excellent, cost-effective solution.
Need help confirming compatibility or placing an order? Call our knowledgeable staff at or e-mail us. Buy this replacement UPS battery set today to ensure your APC RBC135 continues protecting your critical systems — fast shipping and a 1 year warranty included.
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