Jasco RB1242 Reliable 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 | 5 AH
Terminal Type
F1
Replacement Jasco Battery RB1242 — Compatible with Jasco RB1242
This replacement battery for the Jasco Battery RB1242 delivers reliable compatibility, consistent performance, and proven durability. Designed to meet or exceed OEM SLA specifications, the Jasco Battery RB1242 replacement offers a maintenance-free, sealed solution for systems that demand dependable standby power. Whether you're restoring backup capacity in a UPS, maintaining emergency lighting, or replacing worn batteries in alarm systems, this high-performance battery is engineered to provide dependable service and long shelf life. If you need a replacement battery that is both affordable and reliable for your Jasco RB1242 model, this is an excellent choice.
Key Specifications
- Model: Jasco Battery RB1242 (Replacement)
- Battery Type: Rechargeable Sealed Lead Acid (SLA)
- Technology: Absorbent Glass Mat (AGM) Technology
- Design: Maintenance-Free with Spill Proof Construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Brand/Manufacturer Label: SigmasTek
- Voltage & Capacity Label: 12 Volts, 5 AH
Benefits
This long-lasting battery is built for durability and dependable performance in demanding environments. The AGM construction provides superior vibration resistance and reduced internal resistance for consistent power delivery, making it a true high-performance battery ideal for cyclic or standby applications. Because it is sealed and maintenance-free, you avoid the hassle of water top-ups or acid spills during installation and use — a critical advantage for equipment in tight enclosures or public-facing installations.
Expect extended service life and reliable recharge acceptance, which translate into fewer replacements and lower lifecycle costs. The U.L. recognition and CE certification ensure safety and compatibility with certified equipment. Typical applications include uninterruptible power supplies (UPS), emergency lighting systems, alarm panels, telecommunications equipment, and portable power tools that specify SLA batteries. This replacement battery fits devices calling for the Jasco RB1242 model and restores original runtime and performance.
Choosing this replacement battery means choosing a dependable, factory-fresh pack that arrives ready to install. Use it to maintain critical systems that require uninterrupted power and peace of mind.
Ready to restore reliable power? Add the Jasco Battery RB1242 replacement battery to your cart now and benefit from a quality, long-lasting battery backed by a 1 year warranty.
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