BLUETTI B300S Expansion Battery | 3072Wh (Only Works With AC500)
- 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)
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.
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.
4-year Hassle Free
Expandable Battery Pack
Responsive Even in the Cold
Note: Self-heating Function won't be activated if the ambient temperature is under -4℉.
Standalone Power Source
Blazing Fast Recharging
* The data is for reference only.
* The D050S DC charging enhancer is required.
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.
Other Top Rated Products
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.
Q1: How many B300 packs can be connected to AC500？
Q2: How many B300S packs can be connected to AC500？
Q3: Can B300S and B300 be mixed in an AC500 power system?
A: Yes. 4 packs in total.
Q4: Does B300s support App control?
A: Connect it to the AC500, pair them with BLUETTI App, and you can control the system at any time from anywhere.
Q5: Can I use B300s alone as a UPS?
Q6: What is the maximum input charging power of the BLUETTI B300S?
A: 1.000W Max. with optional D050S DC Charging Enhancer*
* Sold separately
Q7: Can I use car cigaretter lighter or lead-acid battery to charge B300S?
A: Yes, BLUETTI D050S DC Charging Enhancer* is required.
* Sold separately
Q8: Can I use third-party solar panels to charge the BLUETTI B300S?
A: Yes, if the solar panels' specs fall in
1) Total Voltage: 12-60V
2) Total Power: 500W Max.
3) Include MC4 connectors.
Q9: Can it charge and discharge at the same time?
Q10: Can I use or charge B300S in sub-zero temperatures?
A: Temperature ranges for B300S are:
Charge: 0-40℃ (32-104℉);
Discharge: -20-40℃ (-4-104℉);
Storage: -20-40℃ (-4-104℉).
Technically, it can power electrical devices under such situations, but please avoid charging it.
Q11: How long can it run my device?
A: Running time = Battery capacity × DoD × η ÷ Device rated power DoD refers to Depth of Discharge and η is local inverter efficiency.
For B300s, both DoD and η are 90%. If you run a 100W light bulb with it, the running time will be:
3.072Wh × 90% × 90% ÷ 100W ≈ 25hrs
Note: The above data is for reference ONLY.
Q12: Is B300S waterproof?
A: No. Also, please do NOT store it in a humid environment for a long time.
Q13: Is it possible to replace the built-in battery?
A: No. If the battery pack is faulty or even dead, please contact BLUETTI Customer Service.
Q14: I'd like more tutorial videos on the AC500 and B300S combo.
A: Sure, please follow BLUETTI Support on YouTube.
Q15: What is the difference between B300S and B300?
1) Current capacity: 130A for B300S while 75A for B300.
2) ONLY B300S features the automatic heating function.
3) Solar input: 500W for B300S while 200W for B300.
Q16: How does the heating function work?
A: When the temperature is below 0℃, the battery will be automatically heated once AC or PV charging is activated (input power＞400W).
Q17: Can the B300S be used with the AC300?
A useful guide to making the most of it all.