Hello all, my EB70S is 2.5 years old and is used about 4 - 5 times a year. Last 2 time I have had issue where shows 100%, discharges to 80% and shuts down. Have to change it and it does go to full charge on a/c adapter til green light. Show full then same thing top 20% useable for 25 - 26 min @ 215w then drops. I put small watt after drop to see if it’s as low as can be, 5 - 6 watts and those drop in 2 min, so guessing at bottom. Seems to only have 93wh available but at the top not at low range per the meter bars?? Any thoughts on recovery? I have tried the Calibration steps and doing that once again. Will leave it Full for 24 hour to see, some said got to do it couple times.
Hi @Dcampr, Yes, for this issue, we believe recalibration is the best method.
Additionally, we’d like to confirm whether your ambient temperature is suitable.
Besides AC charging, do you have any other charging options? We recommend using car charging or solar charging—does this help?
Hi Dcampr,
What you want to do is discharge the unit at a steady rate until it powers off completely. Not until it reaches 0%. Until you can’t even turn the DC or AC inputs on. Then (and this is critical), recharge the unit from wall ONLY. Do not recharge via solar. It needs a constant charge in order to properly recalibrate the battery. You may need to repeat this process again (but its rare). If it still does not work, then you will need to send in for repair most likely. I had an EB70S that refused to recalibrate. I also have an AC180 and did the same steps and it successfully recalibrated. The key is to discharge at a constant rate and charge from a constant power source (i.e. your house electricity) DO NOT USE SOLAR TO RECALIBRATE.
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Thank you for the tips. I have discharged at a steady rate of 215 W twice now. I have charged With the included 200 W AC adapter. I am still at the challenge of only the top 20% being discharged and then charged. I will attempt a steady discharge of lower wattage and then charge with the DC charging cord, offering a slower recharge rate. I will update after this experience.
Sounds good. Yes, just make the discharge load is constant as well. So nothing like a refrigerator which goes through a duty cycle turning on and off. Preferably something with not TOO high of a laod, so you can get as close to 100% discharged as possible. What stinks is you are outside your warranty window, so you lose nothing by re-attempting these steps multiple times. It is very rare, but possible you need to perform it a few times.
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Ran a TV @ 99w constant on Bluetti EB70S, ran for 27 min then dropped. No access EB70S shut down ,not even the built t in light. Used car charger included DC cord and charged at constant 98w charge on Bluett and DC outflow from source was 106w constant. Took 1 hour 20 min to recharge.
Ran same device @ 99w again and runtime before shutdown was 50 min. Still shows 80% on display, never dips below this level per the meter. Have to use Car charge cord to wake the shut down EB70S, battery monitor bars have to climb to 100% then unplug immediately. Plugged in usb-c phone to try and see discharge EB70S at 15w draw, lasts 20 second then EB70S shuts down again. just trying to reflect I am at some sort of bottom for the battery power.
Charged the EB70S with the Car charge cord again, 98w in and took about 1:20 to charge. Rand the 98w TV again and it ran for about 1 hour. Ran this cycle a third time with same outcome.
Device meter never shows below 80% discharge. Discharge @ 215w or 98 w seem to have nearly the same watt hour of 90 - 100 WH discharge capability.
Temperatures in my area re not extreme in hot or cold ranges. Located in San Jose, CA, USA. I store this in my RV within the coach, not in an exterior storage locker.
This unit seems stuck for the user calibration approach. Have a trip at the end of April, what are the service capabilities and how to get to that request if there is nothing more I can do.
Hi @Dcampr, We’d like to confirm whether all loads were removed during the charging process while performing the recalibration.
If that’s the case and it still only maintains output for a short time, we’re concerned there may be an SOC (State of Charge) anomaly. In that situation, please contact customer service to arrange a warranty service.
If you have any questions about how to reach the appropriate customer service team or concerns about the service process, please send us a private message with your order information so that we can arrange priority service for you.
By the way, please note that if you need my assistance, please @BLUETTI_CARE, otherwise, I might not see your message and be able to help you promptly.
Hi all, yes the loads were all fully removed and all outputs service buttons and lights off during charging. I have called in and I am out of warranty but have connected with an agent to guide me through the shipping process to the warehouse. With this just past warranty at 2.5 years old I discarded the original box and have to gather packing materials to ship. But up against a trip so having to buy another one to get me through my needs in 2 weeks. Sorry to say with this experience it is not a Bluetti but I will pursuer getting this one repaired as I hate to throw out the $575 in this short time frame.
Hi @Dcampr, I am sorry for the inconvenience.
It seems you’ve already contacted our customer service team. Could you please share your support ticket number with us? We will try to request a repair discount for you. Hope this helps.
By the way, please note that if you need my assistance, please @BLUETTI_CARE, otherwise, I might not see your message and be able to help you promptly.
Hi @BLUETTI_CARE , thank you for this message. I have just now sourced materials to ship the product to service and am sending the pictures of my packaging work to the agent as requested. After 2.5 years the original packing was discarded. Once they look at the unit at the warehouse and give me the assessment I will report back here.
Hi @Dcampr, Thank you for getting back to us so quickly.
We hope everything goes smoothly from here!
We look forward to your update. If you have any feedback regarding our service experience, please let us know your service ticket number so we can monitor and investigate the service process accordingly.
Hi @BLUETTI_CARE Following up here for case # 263523. I received a message today that the EB70S is not able to be repaired and since this is a discontinued unit and there are no refurbished parts available it can not be supported. 2.5 years since purchase and 6 months past warranty. I can send $50 to get it back or surrender it for recycling. I have requested further explanation as to what failed as the unit did work as I had described but only 20% value. Needless to say very disappointing for a $577 appliance that is so young. Never got error messages or any indication of use failure other than diminished capacity using only the top 20% range that seemed to have no resolution by the user. 
If you do decide to pay for the shipping back, here’s a last ditch thing you can try. Plug it in until it gets to 100% like before. Simply just turn on the DC input and leave it on until it dies. The self-consumption will eventually kill the battery.When you go to charge it back up, it should take ATLEAST 5 hours to fully charge it back up. If its charging in any less than that, it’s not using the full range of the battery and the BMS is likely defective. Likewise when discharging, it should take a proportional amount of time to discharge. Assume you get 75% efficiency from a 100W load. That’s still around 5.7 hours of runtime. A bad cell can also cause the BMS to act up, but if that’s the case, and they don’t have the parts for it, you are out of luck at that point. Hopefully a trickle charge does the trick as a last ditch effort.
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Hi @Dcampr, Thank you for your confirmation. We’ve located your email record.
The current service process is indeed in line with our policy — for out-of-warranty products, repairs are not possible when replacement parts are unavailable. We apologize for the inconvenience this may have caused.
@Sealy1986’s suggestion is very insightful. Please try charging via car charger and perform a recalibration. We believe this may help recover some of the battery capacity.
Additionally, batteries do have a limited lifespan, and infrequent use can negatively affect their health. The EB70S is an older model, and its features and performance are not on par with our newer units. If you’re open to upgrading, we’d be happy to apply for a special discount on a new model for you.
@BLUETTI_CARE I believe Bluetti has an ethical obligation to reduce e-waste as much as possible. Part of that involves addressing planned obsolescence so you do not end up with as many defective Bluetti solar generators in the landfill. I see that you are taking steps at providing a greener initiative by offering a longer standard warranty on existing units such as the Bluetti AC180 which comes with a 5 year warranty versus the older models like EB70S which only came with 2. As you improve product design and functionality, you reduce e-waste as a byproduct of that, which is a good thing. Improving repairability is another thing. Open up to right to repair and allow 3rd party shops the ability to fix Bluetti units. Less e-waste and less barrier to entry cost for the end user. Maybe they just want a battery refresh and they like the layout of the existing unit OR in my case, my Radica Moonlander build is specifically outfitted to support the Bluetti AC180. If I have to change power stations I may also have to change my build layout. Some people may build their shelves to fit exactly the size of a particular unit. I don’t think a rebate/buyback strategy is effective because nobody wants to lose 50%+ of their value for a unit that is supposed to last 5 years minimum. In other words I’m not buying a Bluetti AC180 at $500 to sell it for $250 to buy a Bluetti Elite 200 V2 for $1199. I gave Bluetti $1699 and got back $250, so I paid $1449 for a Elite 200V2?! I would just have rather kept my AC180 long term, or invested in the Elite 200v2. Buyback is pointless. Offering a credit toward a newer unit is a gesture of good faith though and I like to see that Bluetti’s customer service has improved as a result of past experiences. You still fulfilled your legal obligation for warranty in this case as well, so kudos on that regards.
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Hi @sealy1986, Thank you for sharing your thoughts and encouragement. We’re proud to share that our new products incorporate advanced technology and more eco-friendly, safer materials, which has also allowed us to extend their warranty periods. Sustainability remains a key priority in our ongoing efforts.
We fully understand the concerns that arise after a product’s warranty expires. To better support our customers, we strive to offer flexible solutions, such as:
Discounted repair services
Special pricing for new unit upgrades
We’re committed to respecting each customer’s preferences and choices in these matters.
Regarding your suggestion about “Open up to right to repair and allow 3rd party shops the ability to fix Bluetti units”, we agree it’s an excellent idea. Implementing this would require:
Training certified repair shops
Ensuring part and tool availability
We’ll conduct a feasibility study to explore this possibility. Your input is invaluable, and we’ve already shared it with our marketing team for consideration.
Thank you again for your engagement and constructive suggestions—they truly help us improve. Please don’t hesitate to reach out with any other ideas.