Expert Service 1-877-289-7664 [Hours]

SHURiKEN SK-BT20

12V High Performance AGM Power Cell Battery for Systems Up To 600 Watts

In Stock
|

List price $129.99

$59.99

with warranty

You Save: $70.00 (53.85%)

Arrives by Thursday, Sept. 4 to zip 20147

Add an Extended Warranty

Fast, Free Shipping

Within the US 48

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

In Stock

Arrives by Thu, Sept. 4

Get FAST answers from customers ASK a Question See questions answers

Bundled Savings with this Product

Get 10% off an NVX BIR200 when you Purchase a Battery.

If you're adding a second battery for your Audio System you should add a Battery Isolator. Buy them together and save 10%. Simply Click the "Add Both to Cart" button to the right.

4.50

17907

257

SHURiKEN SK-BT20

$59.99

+

10% OFF

NVX BIR200

$44.99

Special Price $40.49 ($44.99 if purchased separately)

NVX BIR200

• 200 Amp Battery Isolator
• 200 Amps at 12V Continuous
• 300 Amps Surge
• Switching Power: 10 - 16 VDC

Get 10% Off a Smart Battery Charger with Battery Purchase!

Make sure that your High Performance AGM Battery stays at its maximum potential by adding a CTEK MULTI US 3300 12V Smart Battery Charger when you purchase a qualifying AGM Battery. Simply Click the "Add Both to Cart" button to the right.

6.00

17907

112

SHURiKEN SK-BT20

$59.99

+

10% OFF

CTEK MULTI US 3300 (56-158) De-Sulfating Charger

$59.99

Special Price $53.99 ($59.99 if purchased separately)

CTEK MULTI US 3300 (56-158) De-Sulfating Charger

• Battery Charger
• Designed for All Types of 12V Lead-Acid Batteries
• Four Step Fully Automatic with Pulse Maintenance Mode
• 1.3mA Back Current Drain
• Full Automatic Charger
• Splash Proof
• Compact Design
• Special Cold Mode

(Offer 1 of 2)

Combined Total Price

$100.48

You Save $4.50

SHURiKEN AGM Car Audio Power Cell

This SHURiKEN 12-Volt Car Audio Power Cell features a sealed absorbed glass mat (AGM) design and is perfect for 600-watt car audio sound systems. The SK-BT20 can be used as a replacement for your vehicles standard battery or as an additional battery to provide the extra power needed for a high performance aftermarket system. It's unique spill free design allows this power cell to fit in most factory battery locations with no hazardous leaks.

SHURiKEN's SK-BT20 Power Cell has a 20 amp hour rating and will resist extreme heat conditions and vibrations and is 100% sealed in a reinforced ABS plastic case. SHURiKEN has designed this power cell to be used with ring terminals or a buss bar. You will love the way SHURiKEN batteries get your system powered up and ready to go!

Battery Features:

  • 12V High Performance AGM Car Battery
  • For use with audio systems up to 600 watts
  • Engineered specifically to meet the needs of a high end audio system
  • Using AGM (Absorbed Glass Matt) technology allows the battery to be mounted in any position
  • Unique spill free design
  • Extreme heat resistance
  • Resistant to heavy vibrations
  • Super low ESR
  • Packed closely with pure lead plates
  • 100% Sealed and maintenance free
  • Designed to be used with ring terminals or a buss bar
  • SAE Posts available: Shuriken SK-SAE20
  • Wing Nuts with Posts available: Shuriken SK-WN120
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Battery Specifications:

  • Amp Hours: 20
  • Compatible System Wattage: 600
  • Weight: 13.5 lbs.
  • Dimensions: 3"D x 7.5"W x 6.5"H

General Features

Cranking Amps
An amp is a unit of electric current. The greater the number of amps, the more powerful the unit is.
850
Amp Hours (AH)
A unit of measurement for battery capacity, obtained by multiplying a current flow in amperes by the time in hours of discharge.
20
Width
The width of the item from left to right (side-to-side) measured in inches.
7.5"
Height
The height of the item, measured from top to bottom, in inches.
6.5"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
3"
Maximum System Wattage
Different car batteries will work for systems putting out different wattages. This refers to the recommended wattage range that you should use this battery for.
600 watts

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
82%
4 Star
7%
3 Star
9%
2 Star
2%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.7
Features
4.6
Design
4.5
Usability
4.7

Chris

Johns Creek, Ga

Overall
Durability
Value
Features
Design
Usability

Great Battery

October 23, 2011

I was having severe voltage drop in my car running 900w rms on the stock battery so I decided to replace it with two of these wired in parallel. They work great. Before my voltage was dropping down from 14.4 to 11.9 and now it stays around 13.5 with my system cranked and dips down to 13.1 on bass tests. None the less, these batteries pack a punch for a small package.

2 of 2 found this helpful

Help our customers find the most helpful reviews

Leon

Shiprock, NM

Overall
Durability
Value
Features
Design
Usability

Shuriken battery

October 20, 2011

This battery worked great... no dimming and the system sounds stronger. Sonic is a good place for electronics.

2 of 2 found this helpful

Help our customers find the most helpful reviews

Paul

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability

Works well

October 11, 2011

This is a great battery! It's sealed lead acid, so it can be installed at any angle. I use this battery to power a digital media player and small amplifier with two 6 by 9 inch speakers in a standalone "boombox" audio unit. The battery lasts a really long time, and I've never had a problem with it.

2 of 2 found this helpful

Help our customers find the most helpful reviews

Matthew

Columbia, MO

Overall
Durability
Value
Features
Design
Usability

Great battery!

August 24, 2010

I got this to replace the old lead acid battery in my CRX and it's a great battery. I relocated it to the compartment behind my seats and it fits great. I've never had any problems with it, and I'm using it as the main battery for my car.

2 of 2 found this helpful

Help our customers find the most helpful reviews

Jack

Taylorville, IL

Overall
Durability
Value
Features
Design
Usability

Didnt last

April 28, 2014

Well had this battery for 1.2 years. Car sat for 3 months in winter and now battery will not hold more than 8 volts. Worked great before parked though.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Clarence

Hyattsville, MD

Overall
Durability
Value
Features
Design
Usability

So much better than a cap!

January 16, 2014

Decided to add an extra battery for my system instead of using a capacitor and it works perfectly! Placed it in the trunk in an mdf box with zip ties to keep it in place. Also don't forget to use a battery isolator relay so you can avoid draining your main battery when the car is turned off!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Jon

Ga

Overall
Durability
Value
Features
Design
Usability

Awesome little battery

December 20, 2013

I put this in as a second battery in my 05 mustang gt I'm currently running two pioneer 1500 watt mono amps (850rms) to two alpine type r12 subwoofers at 1 ohm each 1 sub for each amp, and this battery never misses a single beat I was hesitant because it says it's rated to 600 watt systems, however I assure you it's capable of much more than that also a great size so it's easy to hide and or conceal behind an amp rack. To sum it all up another great product from sonicelectronix

0 of 0 found this helpful

Help our customers find the most helpful reviews

Ronald

Kissimmee, FL

Overall
Durability
Value
Features
Design
Usability

Nice little battery!

July 23, 2013

I've had it since January 2013. Ordered from Sonic. I was building my first music system for my car and had the Pioneer DEH-15UB HU, Pioneer 6 1/2 speakers in the front doors, Sony Xplot 6 X 9 speakers on the Rear Deck, the Alpine MRP-F300 4 ch amp and two 10" Sony Xplod subwoofers in a sealed enclosure. I was going through blogs and reviews about Voltage drop, headlight dimming, and the discharge of the main Battery when the Bass hits. I was considering purchasing a capacitor because I wanted my music to sound great and was afraid of draining the main battery. My neighbor had a two amp system with a 6 Farad capacitor in his car, and it looked great. He kept telling me that he usually spent much time listening to music with the engine off and that he would never had a problem. Going through the Sonic's webpage, I discovered the vast array of AGM batteries available and after some thinking I decided to try. I purchased this BT-20 'cause of the price and I knew I did not have a 2000+ watt system. I took it to AutoZone for a pro installation and they installed the battery in the trunk, in parallel with the main battery without an isolator. The experience was great. My music sounded with an extra punch and I used to test the music at loud volume for extended periods and it never discharged. Today I'm using a 2 amp system. I'm still using the Pioneer DEH-15UB. In the front doors I have 6.5" mid woofers, the same 6 X 9 speakers on the Rear Deck. They are connected to the same Alpine V-Power 4 ch. Plus I'm using one of the 10" subs in a vented enclosure on the floor behind the driver's seat, and it's connected to the Boss Phantom 1502MW Mono power amp. The two amps connected to this BT-20 which is now located inside the car, hidden, beyond the area where the passenger rest their feet. I have everything inside the car, the amplifiers under the seats. I added the NVX BIR80 80 amp isolator. the experience is even better. The music sounds awesome. It's loud and clear, no distortion. And I always push it, listening to music for 2 hours or so with the engine off. The 4 ch amp is rated at 300 watts RMS and the mono amp, 350 watt RMS when driving a single 4 ohm sub. That's pretty much the load I'm placing onto the BT-20. I haven't actually measured the voltage when driving the two amps, but according to what I hear when I listen to music, it's all good. I cannot say how long it takes to fully recharge it, but I've never had a problem. I recommend this Shuriken BT-20. It works for me. It has never been fully discharged yet. It's driving my two power amplifiers well. The music sounds great, with that extra punch. Plus the main battery draining is not a concern anymore, hehehe.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Baja

Lake Jackson, TX

Overall
Durability
Value
Features
Design
Usability

Great value and Service!

July 23, 2013

I recently purhased 2 Shuriken SK-BT20 batteries. One of them failed for some odd reason. I contacted Sonic and they immediately arranged for a return. I received the replacement battery in a very short time. These batteries are very well made and the AGM constuction allows for several installation options.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Tom

Dallas, Tx

Overall
Durability
Value
Features
Design
Usability

Err, eh.

January 14, 2013

For occasional use it doesn't hold it's charge very well. I've got it on a boat and we only get out a couple times a month. The charge falls between uses every time. Once the alternator has charged it back up it's fine, and it only powers the radio so that's okay. I wish it held its charge better though...

0 of 0 found this helpful

Help our customers find the most helpful reviews

John

29483

Overall
Durability
Value
Features
Design
Usability

great deal and quite impressed

December 6, 2012

I have an 08 Jeep liberty with 8 13.5" JL Audio subs and I have a JL HD 1200/1 on each sub and then I have the focal k2s 3 way component set one in front and one in the rear and I have 3 JL HD 600/4 on those yes I know you don't need that much going to the two component sets but I'm running an all active set up with processor and believe it or not I'm using just two of these batteries and boy you should feel the POWER in fact if you get within a half mile of me you will feel the power

0 of 0 found this helpful

Help our customers find the most helpful reviews

pcguy

IL

Overall
Durability
Value
Features
Design
Usability

Works better than I expected

November 21, 2012

I bought two of these to run over 2000w RMS of bass. Now let me say: before I got these, I was getting severe volt drop (down to 10.9v) and bad light dimming with hard bass (people thought I was flashing them lol). I was kinda "shocked" lol that although I am running these far above what they are recommended for, I no longer get my lights dimming and voltage does not drop below 12.5 EVER. ZERO dimming lights and I still have the stock alternator. Highly recommended!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Stitched

AZ

Overall
Durability
Value
Features
Design
Usability

Awesome

November 9, 2012

Forget buying a 1 farad cap. This lil monster sure does come in handy! These are awesome.

0 of 0 found this helpful

Help our customers find the most helpful reviews

pcguy

IL, USA

Overall
Durability
Value
Features
Design
Usability

Works great!

October 29, 2012

These batteries are fantastic. Don't let the small size fool you. I'm using two of these together with my stock battery to run a 2400w rms amp and voltage is always above 12.5 at full (clear) volume. My only issue is that the posts on them are kinda small and use a small Philips type bolt but it works ok. I've been an installer for over 15 years and definitely recommend these.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Kevin

Canada

Overall
Durability
Value
Features
Design
Usability

Perfect so far!

September 17, 2012

Needed a small battery for my Skyline as 1/2 the original location is being used for a catch tank. No problems starting my car and have room to spare. Not sure how long it will last as a primary battery but so far it's been great.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Michael

Houston, TX

Overall
Durability
Value
Features
Design
Usability

Serious Charge

August 19, 2012

I use this battery to power two on-board air compressors for air bag suspension on my "pimped-out" caravan. The voltage usually sits at about 12.8~13vdc and never sags below 12vdc whenever my compressors kick in. Did I forget to mention, all my audio is powered off this same little battery. I added a disconnect relay between my main battery and the Shuriken which is controlled by a switch so I can charge the battery when I'm driving or I can let it stand alone for a while and it does a good job. Well worth the money, I will buy more as needed for my other vehicles.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Daniel

Lancaster, NY

Overall
Durability
Value
Features
Design
Usability

Crazy power

July 24, 2012

Purchased this battery to power a stand alone head unit, 2x dj speakers, and a 2000 watt amp. Also used a 1.2 farad cap. This battery lasted my entire show duration, 12 consecutive hours, and still had consistent flow. Used it on and off for a few months to show the audio system. Ended up using it to power a friends jetski, and that is where it is atm. Albeit, prob not the best place for a self contained battery, but its taking the abuse well lol. Power levels are unmatched. I'm super happy I got this, and would/will get another.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Dav0

Memphis, TN

Overall
Durability
Value
Features
Design
Usability

Big power! Small body!

July 2, 2012

This is a small compact battery with a little weight to it. Try reaching to pick it up with one hand and you'll buck ya eyes when you try to pull up. This was my 1st battery in the trunk. It got the job done. Had 2 amps being powered off it. I was just in the intro stages of car audio. This is a good buy though

0 of 0 found this helpful

Help our customers find the most helpful reviews

Nate

Washington, PA

Overall
Durability
Value
Features
Design
Usability

Better than any cap can ever do

June 17, 2012

If you need more power and your headlights dim from those darn caps then get one of these because it will solve your issues. 1200 watts rms and under hands down. DON'T GET A CAP GET THIS. My voltage with cap: 11.3 volts drop. With this: 13.5 on 1150rms in a honda civic with stock alt and batt and 4 gauge. Boom! There it is. NO Brainer and Sonic is a great company that supplies great products, thanks guys!!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Mike

Los Angeles, CA

Overall
Durability
Value
Features
Design
Usability

Awesome battery! Must recommend

June 11, 2012

I used the battery as a second battery for my stereo system in my car. The battery is very compact and it took place of a much more expensive capacitor. Since it's a dry cell its mounted sideways and it has no problems powering my system without draining my main battery. Only downside is that I had to find hardware to mount things to the terminals.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Accessory Tools and Products

Accessories added

XS Power 500

XS Power 500 Battery Heat Protection Wrap

Your Price $29.99

SHURiKEN SK-SAE20

Pair of SAE M5 Battery Posts

Your Price $12.99

Belva BBG3KT

1/0 AWG Big 3 Upgrade Kit with CCA Wire for Audio Sytems up to 250 Amps

Your Price $39.99

NVX XBG3PK

1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire for Audio Sytems up to 350 Amps

Your Price $79.99

XS Power AK1000 4 AWG CCA Secondary Battery Wiring Kit

Comes with all the wiring and fusing needed to install a second battery for your 0-1500 watt audio system.

Your Price $49.99

CTEK MULTI US 3300

12V De-Sulfating Smart Battery Charger for Lead Acid Batteries

Your Price $59.99

Items we think you might want

SK-BT100 thumbnail

SHURiKEN SK-BT100

• For Systems Up To 2000 Watts
• 100 AH
• Absorbed Glass Matt Technology
• Extreme Heat Resistance
• Super Low ESR
• 100% Sealed and Maintenance Free

Your Price $239.99

SK-BT80 thumbnail

SHURiKEN SK-BT80

• For Systems Up To 1800 Watts
• 80 AH
• Absorbed Glass Matt Technology
• Extreme Heat Resistance
• Super Low ESR
• 100% Sealed and Maintenance Free

Your Price $219.99

SK-BT60 thumbnail

SHURiKEN SK-BT60

• For Systems Up To 1500 Watts
• 60 AH
• Absorbed Glass Matt Technology
• Extreme Heat Resistance
• Super Low ESR
• 100% Sealed and Maintenance Free

Your Price $179.99

SK-BT35 thumbnail

SK-BT35

• For Systems Up To 800 Watts
• 35 AH
• Absorbed Glass Matt Technology
• Extreme Heat Resistance
• Super Low ESR
• 100% Sealed and Maintenance Free

Your Price $119.99

SK-BT120 thumbnail

SHURiKEN SK-BT120

• For Systems Up To 2400 Watts
• 120 AH
• Absorbed Glass Matt Technology
• Extreme Heat Resistance
• Super Low ESR
• 100% Sealed and Maintenance Free

Your Price $299.99

Browse 1 question and 1 answer
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Great Battery
Umeshsinh T on Aug 4, 2014

Product Summary

Manufacturer

Model Number

SK-BT20

UPC

086429173402

Weight

13.60lbs

Internal SKU

skbt20

Internal Product ID

17907

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: SHURiKEN SK-BT20

  • Shuriken High Performance Car Batteries
  • SHURiKEN 12V High Performance AGM Power Cell Batteries