B2 Audio Lithium / SLIP20AH

Code: SLIP20

The SLIP20 the newest in lithium ion nanotechnology offering extreme power with the ultimate in safety for daily driven vehicles.
12V Lithium Battery, Max Amplifier Wattage: 5,000W (burst power), Continuous Amplifier Wattage: 3,500W


Out of stock




Derived from the successful SLIP40AH LiFePO4 battery, the SLIP20 makes its entry. It has the same cylindrical design using the 18650 cell as the the foundation. Why such a small battery you might think? Due to the high discharge abilities, (which should be the core function of any lithium battery used for car audio), it is preferable to have multiple terminals to draw power from. Compared to a single 36 Ah ~ 40 Ah battery, 2 smaller batteries in parallel with the same Ah usually yields a higher discharge capacity. Looking at it that way, things starts to make sense right?

Then comes the benefit that matters most, the cost and the application. Most systems currently run AGM batteries, however switching to a lithium system could be a costly option, thus many won’t even consider it. But with a smaller, more cost efficient battery, with the ability of holding up to 3500 watts of continious amplification it changes your mind setting. Adding in the weight and space savings vs conventional batteries, why not leap into the future? The SLIP20’s 8.32 Lbs / 3.77 Kgs vs a 60 Lbs / 27 Kgs battery should be a no brainer.

Unfortunately the lack of knowledge in using lithium for car audio has also created a dark side. Various types of batteries are sold as premium goods, but could be anything from recycled cells to low discharge cell not intended for car audio, but worst of all is they are made with disregard to the end users safety. The SLIP20 has undergone strict and various SAE J537 testing by an independent testing lab in USA.

SLIP20 has a “BMS” Battery Management System which features cells balancing, short circuit protection and over current protection, making the battery safer to use than DIY batteries.

Product Manual


  • Weight Lbs. – 8.32
  • Weight Kgs. – 3.77
  • Length – 6.53 in
  • Height – 4.92 in
  • Width – 6.89 in
  • Housing Material: Shock Resistant ABS
  • Terminal M8 Shoulder Bolt


  • Open Circuit Voltage – 13.3V
  • Max Charge Voltage – 14.8V
  • Recommended Charge Voltage – 14.6V
  • Amps per hour – 18 AH
  • Amplifier Power Capacity – 5 KW Max / 3.5 KW Continious
  • Max Discharge Current – 400A (BMS protection)
  • Continuous Discharge Current – 300A
  • Max Charge Current – 120A (Alternator)
  • Continous Charge Current: 8 A
  • Watt-hours – 237.6
  • 1 Year Warranty


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Additional information

Weight 4 kg


UK Delivery

All items ordered before 14.00pm are shipped the same day unless otherwise stated at the time of ordering. Orders placed after 14.00pm on a Friday will be shipped the following Monday (excluding bank holidays, in which case it will be the next working day). If the item is out of stock for whatever reason you will be emailed within 24hrs to inform you of this. Our site manages stock inventory so if it says ‘IN STOCK’ that means goods are available for immediate dispatch.

  • Shipping will be calculated at the checkout.
  • Free shipping available for customers in the UK mainland ONLY when orders are over £50.
  • We use Interlink Express for all UK next day deliveries (aswell as for orders over £50 if the weight exceeds 2kg) and Royal Mail Recorded Post for orders under 2kg.

Make sure you supply us with a mobile number when you order, then we can give you full tracking information & updates on your order throughout the process.

Clicking on the above image, will also allow you to track your order online. If you have any questions or queries, contact our helpful office team on sales@bladeice.com

Free Delivery

Free delivery is available to UK mainland addresses ONLY and excludes addresses in the Scottish Highlands & Islands and Northern Ireland. Free delivery is applicable to orders over £50.00 (inc vat) ONLY. This offer doesn’t necessarily mean your goods will be sent on a courier next day service. However assuming the weight exceeds 2kg your goods are usually sent via courier (Interlink Express).

Guranteed 24 Hour

  • Next Day Delivery – Over £50 Inc. VAT – Any weight – Free!
  • Next Day Delivery – 2-5KG – £8.00
  • Next Day Delivery – 5-20KG – £9.99
  • Next Day Delivery – 20-30KG – £11.99
  • Next Day Delivery – 30-40KG – £15.00
  • Next Day Delivery – 45KG+ – £50.00


  • Royal Mail 1st Class Recorded 1-3 working days – Upto 1KG – £4.45
  • Royal Mail 1st Class Recorded 1-3 working days – Upto 1-2KG – £6.90
  • Royal Mail 2nd Class Recorded 2-5 working days – 0-2KG – £3.95


  • Royal Mail Special Delivery Saturday – Upto 2KG – £14.00
  • Courier Saturday – Upto 5KG – £15.95
  • Courier Saturday – 5-20KG – £19.95
  • Courier Saturday – 20-25KG – £22.95

Orders MUST be made before 2pm Friday

Back Order

Items that are listed with ‘Back order’ usually means there is around a 5-10 working day delay for the item to be back in stock. Some items are listed in this way as they are a low volume product and are considered special order with our suppliers.

European & International Delivery

Blade ICE ships internationally to many countries in Europe. Based on the weight of your order shipping will be calculated at the checkout.

Blade ICE reserves the right to charge the full shipping fee applicable to resend if the item is returned to us as the customer was unable to take delivery of the parcel for any reason. Courier returned items will be added back into our stock and your account credited with the order total, minus the fee the courier charges us to deliver the item back to us. You will have to re-place the order to have the item reshipped. If a customer inputs any incorrect details on their order, which causes the parcel to be delivered incorrectly, we will not hold any responsibility for this parcel.

Finally we advise you to check the contents of the order with the inventory sent with the goods. In the rare instance that goods are missing, please contact us within 24 hours and we will happily send out the missing goods at no extra cost to you. If goods are damaged or faulty please inform us within 3 working days of receiving your order.

Please refer to our Terms and Conditions for more information.