OPTIMATE TM-391 Lithium Battery Charger Maintainer 5425006146661 4S 6A 10-STEP 12.8V Charger/maintainer

( Brand: Optimate ), ( Manufacturer Part Number: TM-391 ), ( Part Type: Battery Charger ), ( Features: Charging 6a-26a ), ( Accessories: Accessories ), ( Warranty: 3 Years ), ( Country Of Origin: Chn ), ( UPC: 425006146661 )

Review OPTIMATE Lithium 4s 6a 10-step 12.8v Battery Saving Charger/maintainer

Introducing the Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer, a versatile and advanced charging solution designed for maintaining and recharging 12V lithium ion batteries. This premium charger is engineered to deliver a 10-step charging process, ensuring optimal battery performance and longevity.

The Optimate TM-391 features a 6A charging rate, which allows for efficient and quick charging of larger battery systems. Its 12.8V output caters to various lithium ion battery types, including AGM, GEL, and Flooded batteries, making it a universal charging solution for a wide range of applications.

This advanced charger is equipped with a 10-step charging algorithm. The first three steps are dedicated to the bulk charging phase, where the battery is charged at a constant current until it reaches approximately 80% of its capacity. The next three steps involve the absorption charging phase, where the charger gradually decreases the charging current to maintain the battery's voltage at a constant level while continuing to charge. The absorption charging phase continues until the battery is fully charged.

The subsequent two steps are dedicated to the float charging phase, where the charger maintains the battery at a full charge by supplying only enough current to offset self-discharge. The last two steps are the equalization and temperature compensation steps. The equalization step provides a high voltage pulse to allow the battery to release gasses and balance the battery plates, while the temperature compensation step adjusts the charging algorithm based on the ambient temperature to ensure optimal charging efficiency.

The Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer is also equipped with advanced features such as reverse polarity protection, short circuit protection, and overcharge protection. These safety features help prevent damage to the charger and the battery during the charging process.

The charger comes with an easy-to-read digital display, which shows the charging status, battery voltage, and temperature. It also features a compact and durable design, making it an ideal choice for both home and professional use.

In summary, the Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer is a versatile and advanced charging solution designed to maintain and recharge 12V lithium ion batteries. Its 10-step charging algorithm, 6A charging rate, and 12.8V output make it a universal charging solution for various lithium ion battery types, while its advanced safety features and digital display ensure efficient and safe charging.

Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer: An In-depth Analysis

The Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer is a versatile and advanced charging solution designed for maintaining and charging 12V lithium-ion and absorbed glass mat (AGM) batteries. In this analysis, we will discuss the key features, benefits, and potential drawbacks of this charger to help you make an informed decision.

1. Compatibility: The Optimate TM-391 can charge and maintain various types of 12V batteries, including lithium-ion, AGM, and flooded batteries.

2. 10-Step Charging Process: This charger uses a 10-step charging process, which optimizes battery life by providing the correct charging voltage at each stage.

3. Fast Charging: The Optimate TM-391 can charge batteries up to 6 amps, making it an excellent choice for those who need to quickly charge their batteries.

4. Reconditioning and Equalization: The charger includes reconditioning and equalization features, which can help revive damaged batteries and improve their overall performance.

5. Temperature Compensation: The charger can automatically adjust its charging algorithm based on the ambient temperature, ensuring optimal charging conditions.

1. Price: The Optimate TM-391 is a premium charging solution, and its price point may be higher than some other chargers on the market.

2. Size and Weight: The charger is relatively large and heavy compared to some other options, which may make it less portable.

3. Complexity: The Optimate TM-391 includes several advanced features, which may make it more complex to use for some users.

The Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer is an excellent choice for those who require a reliable and versatile charging solution for their 12V lithium-ion and AGM batteries. Its fast charging capabilities, compatibility with various battery types, and advanced features like reconditioning and temperature compensation make it a worthwhile investment for RV owners, off-grid enthusiasts, and other heavy users. However, its price point and size may make it less suitable for those with a tighter budget or limited space.

If you are in need of a robust and versatile charging solution for your 12V lithium-ion or AGM batteries, the Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Charger/Maintainer is an excellent choice. Its advanced features and compatibility with various battery types make it a valuable investment for RV owners, off-grid enthusiasts, and other heavy users. However, if you have a tighter budget or limited space, you may want to consider other, more compact and affordable charging solutions.

Details:

Optimate TM-391 Lithium 4S 6A 10-Step 12.8V Battery Saving Charger/Maintainer: CHARGING - 6A-26A; voltage OUTPUT. Features: CHARGING - 6A-26A, voltage OUTPUT 12.8V.

part #: tm391 price

• $154.95

specifications batetecha:

• brand: Optimate
• mpn: Tm-391
• part type: Battery Charger
• features: Charging 6a-26a
• accessories: Accessories
• warranty: 3 Years
• country of origin: Chn
• upc: 425006146661

seller batetecha:

• city: USA
• rating: 99.8%
• # reviews: 4570

shipping batetecha:

• transit: 3-8 Days
• cost: $0.00
• service: Standard
• class: Standard
• type: Fixed

offer batetecha:

• quantity: 10
• started: November 17, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock

payments batetecha:

• other
• credit card: Discover
• wallet: Apple-pay

general batetecha:

• Automotive Tools Supplies > Battery Testers Chargers > Chargers Jump Starters
• condition: New

returns batetecha:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

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