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Precision Battery  |  SKU: BW-18122

Precision HJT9B-FP High Performance Li-Ion Replacement Battery for Power Sonic PT7B-4 12V

Sale price $162.49 USD Regular price $222.48
Shipping calculated at checkout.

➤ Compatible replacement for multiple lead-acid battery models including YT9B-4 and CT9B-4 series

➤ Up to 65% lighter than traditional lead-acid batteries for easier handling and installation

➤ Rapid 6-minute recharge time supports minimal downtime and continuous use

➤ Long-lasting with over 2000 charge cycles, significantly outlasting lead-acid alternatives

➤ Equipped with a built-in capacity indicator for quick battery status checks at a glance


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ 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 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

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: 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 | 8 AH

Terminal Type

Nut & Bolt

Precision HJT9B-FP Lithium-Ion Battery Replacement for Power Sonic PT7B-4 (12V)

The Precision HJT9B-FP is a modern lithium-ion replacement battery that fits and replaces legacy lead-acid models such as PT7B-4 and many YT/HT/CT/GT series variants. This high-performance battery delivers markedly reduced weight, rapid recharge capability, and exceptional cycle life while remaining maintenance-free and safe to mount in any orientation—ideal for lightweight applications where long-lasting battery performance and fast recovery matter.

Key Specifications

  • Model: Precision HJT9B-FP
  • Compatible Replacements: YT9B-4(Gel), YT9B-4, YT9B-BS, HT9B-4(Gel), HT9B-4, HHT9B-BS, CT9B-4(Gel), CT9B-4, CT9B-BS, GT9B-4(Gel), GT9B-4, GT9B-BS, Power Sonic PT7B-4
  • Brand: Precision Battery
  • Voltage: 12 Volts
  • Capacity: 8 AH
  • Terminal Type: Nut & Bolt
  • Weight/Volume Advantage: Up to 65% lighter than lead-acid
  • Recharge Speed: 6-Minutes Fast Recharge Time (with compatible charger)
  • Cycle Life: 2000+ extreme cycle life vs. ~350 for lead-acid
  • Safety/Design: No spill, mounts in any direction, no acid inside, no heavy metals
  • Feature: Built-in battery capacity indicator
  • Installation: Includes high-density foam spacers for secure fit
  • Charger Notes: Compatible with many lead-acid chargers but not with chargers lacking voltage limit (max 14.9V) or certain desulfation/continuous charge types

Benefits

The Precision HJT9B-FP offers several clear benefits over traditional lead-acid replacements. Its dramatic weight and volume reduction—up to 65% lighter—make it an excellent choice where saving space and weight is important, such as portable power solutions or lightweight vehicles. The rapid recharge capability and very high cycle life (2000+ cycles) yield a long-lasting battery that reduces replacement frequency and total cost of ownership.

As a maintenance-free, no-spill design, this high-performance battery eliminates acid-handling risks and can be safely mounted in any direction. The built-in capacity indicator gives immediate, easy-to-read state-of-charge feedback so you can plan charging and avoid unexpected power loss. Its clean chemical profile (no lead, cadmium, or mercury) reduces environmental concerns and simplifies disposal at end-of-life.

Typical applications for this replacement battery include portable electronics, backup power modules, small UPS systems, emergency lights, and tools that benefit from a compact, long-lasting battery. The Precision HJT9B-FP also fits many legacy lead-acid footprints, making it a versatile upgrade to a modern, high-performance battery technology.

Upgrade to the Precision HJT9B-FP replacement battery today for a lightweight, long-lasting battery solution with rapid recharge and exceptional cycle life. Order now to experience modern lithium performance in a drop-in replacement package.


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