Introducing our latest addition: LTO (lithium-titanium-oxide) Cells with M4 Studs!
We currently have about a 10-day turnaround from the date ordered.
Check out our FAQ (Frequently Asked Questions) section for more information.
Experience the ultimate power upgrade with these cells, which outperform the Cmax/Insight cells in many ways. Enjoy more power with a smaller footprint!
Please note that cells are not sold separately.
The built bank comes contained in a treated wood case and includes a plexiglass cover (your choice of clear or smoked) and hardware is included. Built Bank comes as you see in the picture complete with Bus Bars, Balancer. just charge it, plug and play!
The balancer is installed and shipped partially charged for your convenience. The compact yet powerful 2.9Ah LTO cell is ideal for applications that require short-time high power charge/discharge and for those that need a small battery size and lightweight design.
Upgrade your power supply today!
Long life (cycle characteristics)
The 2.9Ah LTO cell maintains over 80% of its initial capacity after 40,000 charge/discharge cycles at a tough charge/discharge rate (10C) and high temperature (35°C) conditions.
Rapid charging
The 2.9Ah LTO cell can be charged from 0 to over 80% SOC* in one minute.
* State of Charge
High-rate discharge
The 2.9Ah LTO cell provides stable discharge capacity even in large discharge currents.
Low-temperature operation
The LTO cell can be charged and discharged at temperatures below the freezing point.
There is little degradation even if charge and discharge operation is repeated under low-temperature conditions making it suitable for use in a wide range of temperatures
Power Comparison LTO to Cmax
- 29 AH (60 cells) - Good for 15,000+ Watts
- 43.5AH (90 cells) - Good for 23,925+ Watts - compares to a 90AH Cmax
- 87AH (180 cells) - Good for 47,850+ Watts - compares to a 180AH Cmax
- 130AH (270 cells) - Good for 71,775+ Watts - compares to a 225AH Cmax
- 174AH (360 cells) - Good for 95,700 Watts - compares to a 300AH Cmax
If you are interested in a larger bank than we offer here on the website please call us to place an order.
Package Insurance is recommended please read the package insurance policy for additional info.
Battery Bank Footprint Sizes -
29ah
9.5" Wide
12.75" Long
5.625" Height
32 lbs - 43lbs packed for shipping UPS
43.5ah
18.9375" Wide
11.75" Long
5.625" Height
Weight - 47lbs - 53lbs packed for shipping UPS
87ah
18.937" Wide
20.00" Long
5.625" Height
90lbs - 122lbs packed for freight carrier
130.5 ah
18.9375" Wide
28.375" Long
5.625" Height
Weight - 134lbs - 176lbs packed for freight carrier
174ah
18.9375" Wide
38.00" Long
5.625" Height
Weight - 178lbs - 230lbs packed for freight carrier
A $150 shipping and Handling fee will be added to the order in the cart. These banks will be shipped Via UPS. Please be sure that you are home or arrange a delivery place where someone can receive the package. when delivery is made. we want to avoid porch theft if possible.
Customer Pick Up - If you are picking up your order please select Customer Pick Up in the cart and it will remove the shipping fee. Thank you.
A battery may only be returned for the following reasons.
If the battery is damaged in shipping photo proof of damaged packaging and the damaged battery must be sent with a written refund request with the following information.
Date of Purchase
Date Received
Order Number
Your full name, address, and phone number.
If the balancer or Plexiglass is damaged due to shipping, photo proof is required, and items will be replaced at no charge.
Dead cell time frame – dead cells can be replaced 6 months from the date of delivery at no charge.
Dead cells must be sent back to us in proper shipping packaging, for inspection. Shipping is to be paid by the customer for return.
Once the dead cells are confirmed (not operational) New cells will be sent out to replace them. Shipping included.
The customer is responsible for the shipping cost if returning for another reason beyond damage in shipping to them.
If you cancel order before being shipped there will be a 15% restocking fee this covers our assembly & packaging cost
Coventry Car Audio is not liable for Lost, stolen, or Damaged products.
Protect your Investment with UPS package insurance, it will cover goods that are lost or damaged due to shipping, theft, and weather issues.
Get peace of mind, no matter what. A lot can happen to freight on its journey; wildfires, natural disasters, inclement weather, theft, and more. When your Package is covered by insurance you gain the peace of mind that comes with knowing it's protected, no matter what happens.
You can add Package Insurance in the options for only $20 more.
Just click YES in the options
Battery Charging Rates For Wattage Output (for LTO Banks)
29AH (60 cell) LTO Bank
Charging at 14.8v with 250a ALT = 15,000 watts rms
Charging at 14.8v with 500a ALT = 18,000 watts rms
Charging at 15.7v with 250a ALT = 17,000 watts rms
Charging at 15.7v with 500a ALT = 19,000 watts rms
43.5AH LTO Bank
Charging at 14.8v with 250a ALT = 23,000 watts rms
Charging at 14.8v with 500a ALT = 26,000 watts rms
Charging at 15.7v with 250a ALT = 25,000 watts rms
Charging at 15.7v with 500a ALT = 28,000 watts rms
87AH LTO Bank
Charging at 14.8v with 250a ALT = 46,000 watts rms
Charging at 14.8v with 500a ALT = 52,000 watts rms
Charging at 15.7v with 250a ALT = 50,000 watts rms
Charging at 15.7v with 500a ALT = 56,000 watts rms
130.5AH LTO Bank
Charging at 14.8v with 250a ALT = 69,000 watts rms
Charging at 14.8v with 500a ALT = 78,000 watts rms
Charging at 15.7v with 250a ALT = 75,000 watts rms
Charging at 15.7v with 500a ALT = 84,000 watts rms
174AH LTO Bank
Charging at 14.8v with 250a ALT = 94,000 watts rms
Charging at 14.8v with 500a ALT = 104,000 watts rms
Charging at 15.7v with 250a ALT = 100,000 watts rms
Charging at 15.7v with 500a ALT = 112,000 watts rms
- Battery Bank is completely assembled
- These are genuine LTO Cells (Not Chinese Knockoffs)
- comes complete with sealed wood containment
- comes complete with a balancer
- comes complete Scib BUS BARS (Custom Color Options) with Coventry Logo Standard (custom logo extra)
- comes complete with Plexiglass (Clear or Smoked your choice)
- Each bank is built with Expertise, Quality, and Love!
- Battery is charged to 30% for shipping purposes. Must be charged before use.
- Hardware included
LTO (lithium-titanium-oxide) 2.9AH Cell
Max charge voltage: 2.8V
Nominal charge voltage: 2.4V
Discharge Voltage: 1.5V
Weight: 165 Grams for one cell
Cell Size: 2.5" x 0.5" x 3.9"
Amp Hours: 2.9
Type: LTO
Typically when we receive an order for a built bank it takes about a week before it ships then another 3 to 5 days shipping.
Unless you order custom bus bars i.e., Color Anodizing and custom logo then that could add up to 2 weeks on the build time.
Each bank is built to order we do not stock built banks on the shelf.
Please Read Before Use!
Due to Hazmat Shipping regulations, we are only allowed to send lithium batteries at 30% State of Charge, so you are responsible for charging your batteries before installation. You will want to charge the battery up to your alternator’s voltage set point. (If you do not know what regulator is in your alternator, please contact your alternator manufacturer)
We recommend a DC Power Supply Adjustable (30V 10A), Eventek Variable Switching Regulated Digital Power Supply with Alligator Leads US Power Cord (30V 10A) which can be found on Amazon for around $60.00. to buy click this link.
Your alternator MUST have a voltage setpoint of at least 14.8v MINIMUM, and up to 16.2v MAXIMUM.
These L.T.O. batteries do perform best at 15.7v and up to 16.2v
We do recommend you mount the batteries FLAT on the ground as they are NOT designed to be mounted vertically. If you do, however, mount it vertically we are NOT liable for any damage that may occur.
Power Handling:
29AH (60 Cells)
Charging at 14.8v with 250 Amps of Alternator = 16,000 watts RMS
Charging at 14.8v with 500 Amps of Alternator = 18,000 watts RMS
Charging at 15.7v with 250 Amps of Alternator = 17,000 watts RMS
Charging at 15.7v with 500 Amps of Alternator = 19,000 watts RMS
43.5AH (90 cells)
Charging at 14.8v with 250 Amps of Alternator = 23,000 watts RMS
Charging at 14.8v with 500 Amps of Alternator = 26,000 watts RMS
Charging at 15.7v with 250 Amps of Alternator = 25,000 watts RMS
Charging at 15.7v with 500 Amps of Alternator = 28,000 watts RMS
87AH (180 cells)
Charging at 14.8v with 250 Amps of Alternator = 46,000 watts RMS
Charging at 14.8v with 500 Amps of Alternator = 52,000 watts RMS
Charging at 15.7v with 250 Amps of Alternator = 50,000 watts RMS
Charging at 15.7v with 500 Amps of Alternator = 56,000 watts RMS
130.5AH (270 cells)
Charging at 14.8v with 250 Amps of Alternator = 69,000 watts RMS
Charging at 14.8v with 500 Amps of Alternator = 78,000 watts RMS
Charging at 15.7v with 250 Amps of Alternator = 75,000 watts RMS
Charging at 15.7v with 500 Amps of Alternator = 84,000 watts RMS
174AH (360 cells)
Charging at 14.8v with 250 Amps of Alternator = 94,000 watts RMS
Charging at 14.8v with 500 Amps of Alternator = 104,000 watts RMS
Charging at 15.7v with 250 Amps of Alternator = 100,000 watts RMS
Charging at 15.7v with 500 Amps of Alternator = 112,000 watts RMS
If you would like to see some real-life demonstrations of the performance of these batteries, check out our Facebook group Coventry Car Audio!
Thank you for your business!
, Isaac Daugherty and the Coventry Car Audio Team
Have you been having Power issues?
Dim headlights? Low voltage? Bad sounding audio?
Are you tired of your vehicle's electrical system struggling to meet your demands?
Upgrade to a high-output alternator to ensure a steady and reliable power supply, even under heavy loads.
Eliminate Voltage Drops
Do you experience dimming headlights, flickering interior lights, or a weak audio system? These issues are often caused by a lack of power from your stock alternator. Switching to a high output alternator will provide the necessary voltage to keep all your electrical components running smoothly.
Frequently Asked Questions
Orders ship in approximately 5-15 business days, sometimes sooner. Alternators that require a custom bracket can take 10-25 business days. If for some reason parts are on back order, we will notify you, but this is not common. If payments are being made on an order, your order will start processing when the order is placed.
We offer lifetime warranty on alternator labor and a one year warranty on parts. All orders are heavily wrapped for shipping with several layers of big bubble wrap and two layers of boxes along with a Fragile sticker on the box. If you have to ship your alternator back, please be sure you wrap it the same way to prevent further damage. See more details on our warranty page.
Each of our high output alternators come with smaller overdrive pulley. This pulley is made to increase low RPM charging for maximum output. It is custom for the diameter of the overdrive to be less than your factor pulley, depending on the kind of vehicle you own. For this reason, unless otherwise specified, you will need at least a 1/2 inch shorter belt. You can purchase this from any auto parts store. In using the belt and the pulley system, ensure that each part of the pulley system is free of oil or grease, this will help its efficiency.
It is important to make sure that the small regulator plug that is located on the back of the alternator is well plugged in for the correct functionality. Do not forget to plug it in completely, try not to jam the plugs in backwards, and avoid pinching it in order not to create a short. For more information on regulators and wiring see installation instructions.
Our high output alternators come with an overdrive pulley. The pulley is designed to improve low RPM charging so that it yields maximally. Do not change this overdrive pulley out with a larger diameter pulley. When alternator pulley diameter is increased, the output amperage decreases. Changing the pulley will void all warranties
As promised to all our customers, our products are fully tested ensuring their outstanding performance before shipping. In our experience through the years, it is in many cases not the alternator itself. You must ensure you consider a few possible concerns in your troubleshooting – please read the instruction manual thoroughly.
The reason could be one of two things: Either the plug is wired incorrectly or the computer is sensing the higher voltage and causing the battery light to come on even though the alternator is charging properly. Please refer to the instruction manual tab on the website for specific instructions that will help you with wiring. For some older vehicles, the factory style regulator is not available with the hairpin style alternator. This is why your high output alternator will come already “upgraded” with the 15 volt regulator. It will have an oval plug which requires splicing into the factory plug. This is a simple ,fast step and these instructions are detailed for you in the instruction manual.
Yes, please visit prismaticpowders.com then scroll to the bottom of the page. Select color match and enter your information. When ordering on the JS Alternators website, select the custom prismatic powdercoating color option, and include the specific color you chose from prismaticpowders.com. There is an additional $10 charge for custom colors, and the custom colors are required to come from prismaticpowders.com
We use your vehicles stock voltage unless requested otherwise.
Didn't find the answer you're looking for?
Email us at questions@js-alternators.com and our team of experts can assist you!