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Bluetti B300S Expansion Battery for AC500

SKU: B300S Categories: ,
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Original price was: £2,799.00.Current price is: £1,999.00. inc VAT

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4 Years Warranty

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*Please be advised that Bluetti Products now have an extended lead time and you may not receive them next day. The current delivery time is estimated at 3-5 working days.*

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.

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 -20°C.

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.

Faster is always better. Charge your B300S in 4 hours* at the maximum of 1000W input rate by 1000W Solar input* or 500W adapter with 500W solar input. * The data is for reference only. * The D050S DC charging enhancer is required.

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.

  • Safe & reliable LFP battery with 3,500+ life cycles.
  • Standalone power station with 100W USB-C, 12V/10A car port and USB-A port.
  • Flexible charging via AC, solar and car power sources.
  • Responsive even on freezing days with Self-heating Function.
  • Compatible with AC500 for a maximum of 18,432Wh capacity.


  • 1 x USB-A port (output): 18W, regulated
  • 1 x USB-C port (output): 100W max, regulated
  • 1 DC Output: 1 x 12V/10A (Car Outlet)
  • 1 x Solar Input: Max 500w 10A
  • 1 x AC Input: 500w


  • Capacity: 3,072Wh (51.2V, 60Ah)
  • Type: LiFePO4 (Lithium Iron Phosphate)
  • Life Cycle: 3,500+ Cycles to 80% Original Capacity
  • Shelf-Life: Recharge to 80% Every 3-6 Months
  • Management System: MPPT Controller, BMS, etc.
Product Code B300S
Sockets1 x 18w USB-A port, 1 x 100w USB-C port, 1 x 12V Car Outlet All regulated
Dimensions (WxHxL) 320 x 226 x 520mm
Fuel TypeBattery
Battery Capacity3072Wh
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