JohnLite 2999 Compatible Replacement Battery
⚠️ 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.
📸 Send Your Battery Photo / Unsure? Expert Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
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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 | 7.5 Ah
Terminal Type
F1
JohnLite 2999 Replacement Battery — Compatible with JohnLite 2999
Ensure uninterrupted safety and functionality with this replacement battery crafted for the JohnLite 2999. Designed to meet or exceed OEM SLA specifications, this unit delivers reliability and compatibility you can depend on. Whether you're restoring emergency lighting or upgrading a security circuit, this high-performance battery provides the long-lasting power and peace of mind essential for critical systems.
Key Specifications
- Brand: SigmasTek
- Compatible Model: JohnLite 2999
- Voltage: 12 Volts
- Capacity: 7.5 Ah
- Terminal Type: F1
- Technology: Absorbent Glass Mat (AGM)
- Design: Maintenance-Free
- Construction: Spill Proof
- Safety Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
Benefits
The JohnLite 2999 replacement battery offers outstanding durability and a long service life thanks to AGM construction and maintenance-free design. AGM cells provide low internal resistance for efficient charge/discharge cycles and superior performance under load. As a spill-proof unit, this battery reduces risk in indoor installations and simplifies handling and replacement, making it ideal for commercial and residential use.
This long-lasting battery is suitable for varied applications: emergency lighting systems, fire and security alarms, medical standby devices, home and garden electronics, and consumer electronics needing reliable backup. It also performs well in UPS applications, emergency power setups, and portable tools that benefit from consistent SLA power. The 12V 7.5Ah rating gives ample reserve for short-to-medium runtime demands while maintaining compact size for easy installation.
Certified by U.L. and CE and shipped brand new and factory fresh, the replacement battery is backed by a one-year warranty for added assurance. Its maintenance-free nature reduces ownership costs and downtime, allowing systems to remain protected with minimal attention.
Replace your JohnLite 2999 battery today with this high-performance, replacement battery and keep your emergency systems ready when they matter most. Order now to secure dependable backup power.
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