BLUETTI B300S Expansion Battery | 3072Wh (Only Works With AC500)

2.499,00 €
2.499,00 € 2.699,00 € On sale

Tax included.

  • Safe & reliable LFP battery with 3.500+ life cycles.
  • Standalone power station with 100W USB-C, 12V/10A car port and USB-A port.
  • Responsive even on freezing days with Self-heating Function.
  • Compatible with AC500 for a maximum of 18.432Wh capacity.​ (AC500+6*B300S)​

You can earn BLUETTI BUCKS (Value about €) for completing your purchase!

Product Model:

30 Days Price Match Guarantee

BLUETTI guarantees that we will refund you the difference if you find a lower price from us within 30 days of your purchase.

Notes:(To get the price differences for your order, the following requirements must be met)

1. Valid purchase history within 30 days.

2. Take a screenshot of the lower price and email us, we'll refund the differences as soon as we confirmed it.

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Lifetime Customer

Expandable Battery Pack

B300S has a 3.072Wh capacity and lasts 3.500+ cycles to 80% of its original capacity. Hook up 6 B300S packs with AC500, and you'll get a massive powerhouse with 18.432Wh, enough to power up your RV, off-grid life, and get you through a severe power outage.

Responsive Even in the Cold

Waking up electronics on a freezing day may be time-consuming. But with the Self-heating Function, B300S will automatically heat up the battery to ensure it can work actively and smoothly as usual.

Note: Self-heating Function won't be activated if the ambient temperature is under -4℉.

Standalone Power Source

More than an expansion battery pack, B300S can be used as a standalone power source as it features versatile outputs - 100W USB-C, 12V/10A cigarette lighter, and 18W USB-A to feed your smartphones, laptops, fans, lights, refrigerators, and more.

Blazing Fast Recharging

Faster is always better. Charge your B300S in 4 hours* at the maximum of 1.000W input rate by 1.000W Solar input* or 500W adapter with 500W solar input.
* The data is for reference only.
* The D050S DC charging enhancer is required.

Flexible Recharging

BLUETTI B300S takes up to 500W AC, solar, or car charging.

Never Run Out of Power

AC500 powers your devices like a gas generator, but without any fuel costs, noise, and pollution,
making it safe enough to use next to you whether you're at home, pitching a tent, or trying an RV road trip.

  • Camping with lots of electronic gear.

  • Camping with lots of electronic gear.

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3.072Wh (51,2V, 60Ah)

Cell Chemistry:
LiFePO₄ (Lithium Iron Phosphate)
Learn More>>

Life Cycles:
3.500+ Cycles to 80% Original Capacity

Recharge to 80% Every 3-6 Months

Management System:
MPPT Charge Controller, BMS, etc.


USB-C Port:
1 x 100W Max.

USB-A Port:
1 x 18W

DC Outlets:
1 x 12V (Car Outlet)
*All regulated.


AC Input:
500W Max.

Solar Input:
500W Max., VOC 12-60VDC, 10A

Car Input:
12/24V from Cigarette Lighter Port

Maximum Input:
1.000W, with D050S DC Charging Enhancer


Simultaneous Recharge & Discharge:

79,6lbs (36,1kg)

Dimensions (LxWxD):
20,5 x 12,5 x 10,5in (52 x 32 x 26,6cm)

Operating Temperature:
-4℉-104℉ (-20℃-40℃)

Storage Temperature:
-4℉-104℉ (-20℃-40℃)


48 Months

In The Box


BLUETTI B300S Expansion Battery | 3072Wh (Only Works With AC500) MANUAL

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Customer Reviews

Based on 1 review
Pricier than B300

The battery is certainly good. In our case, we have no use for more than 2 or 3 batteries, so we don't benefit from the increased number of batteries that can be connected together. Moreover, the extra cost related to the self-heating feature isn't useful in our case either. So we only pay the higher price tag as this battery is the only one compatible with the AC500 - which offers the extra power we need compared to AC300.



A useful guide to making the most of it all.

B300S | Battery Module Tutorial

B300 | How to connect the B300/B300S to AC500

How to connect B300S to AC500?