Agilent N9340B battery replacement arrived...DOA ? - Page 1
Forum section: electronics / repair

author: ytterligare
author_rank: Regular Contributor
timestamp: May 22, 2023, 02:41:27 pm
content: Hello, after 42 days, the battery replacement for the SA in the subject arrived today from a seller in Aliexpress. The battery is sold as "DINGLI DLNB48 NF2040HD NF2040DY NF2040AG24"Inserted the battery in the SA, I immediately noticed it was reported to be already charged at merely 8%....well long story short : the Agilent start to charge it ( see pic below ) but after exactly 2 minutes 40 seconds the status goes from "CHARGE" to "DISCHARGE", alias it doesn't charge anymore, and in any case by "forcing" the recharge unplugging and re-plugging the SA ( at least 20 times so far) the charge is still at 8%.Any suggestion to try to recover it ? I already contacted the seller, but you know, the hard part is to be able to ship it back : It happened to me 2 years ago with a cheap SA...Aliexpress decided that the seller had to refund me 50% of the cost and I could keep the ( broken ) device...This is while “charging” ( notice green LED ) but remaining at 8% : status “CHARGE”This is after two minutes, status “DISCHARGE”, and the green LED is off :ThanksA.

author: coromonadalix
author_rank: Super Contributor
timestamp: May 23, 2023, 12:18:39 am
content: if the li-ion battery where not properly charged before put on a shelf and cycled once a year or moreyour's is dead and wont come backsorry but take if you can some procedures for a refund / claimi have old li ion battery packs still very good after many years IF properly managedand stop trying to charge it, you could damage your equipment, hoping nothing happened

author: james_s
author_rank: Super Contributor
timestamp: May 23, 2023, 12:22:25 am
content: If you can open the pack and check the individual cell voltages sometimes if you charge them up with an external charger it will come back to life, I did that with an expensive e-bike battery that had sat around too long.

author: coromonadalix
author_rank: Super Contributor
timestamp: May 23, 2023, 12:30:38 am
content: i would do that if the OP is sure to loose is refund battle ....after this amount of time does it come from Aliexpress ??

author: ytterligare
author_rank: Regular Contributor
timestamp: May 23, 2023, 10:07:39 am
content: Quote from: coromonadalix on May 23, 2023, 12:30:38 amYes it does : I've been waiting 42 days for it to arrive from this seller...but the wait is not something unexpected....what was unexpected was to find the battery charged barely to 8%, so probably it was not properly stored.I'm not really an expert on LiON batteries, but I'm pretty sure they should have some circuitry to prevent the charge to go below a certain percentage.My drones do have a threshold defined by design so that when the charge is below say 10%, they land, no matter where.Anyhow, the SA just try to charge it but does give up after few minutes, probably because it is like it feels the battery is charged, while it is not instead.By keeping detaching and re-attaching the AC plug to the SA, ( 70 times by now ), I was able to reach 11% but I cannot and I don't want to keep on doing it.I already have contacted another USA based battery maker ( Inspired Energy ) and they have a single reseller in Europe which unfortunately is in the UK, so again you have to pay VAT+custom fees amounting 26-30% of the battery+shipping price...

author: coromonadalix
author_rank: Super Contributor
timestamp: May 23, 2023, 12:44:08 pm
content: i understand its frustratingin some cases li-ion, if left for a long time on a shelf without proper charge will get stuck, it kinda get into an open mode / high resistance / not infinite, but nothing will work to put it back into actionthe thing you can do, is find some people in your country who build battery packs, you carefully open yours check the cell(s) and yes DANGER DANGER you could try a sudden boost trying to revive themNot sure in the end if it could work, and you try to find the same cells and re-build your pack ...

author: ytterligare
author_rank: Regular Contributor
timestamp: June 01, 2023, 03:17:09 pm
content: I just wanted to share with you what's happening with Aliexpress seller about this DOA battery : can be useful for other people...So, the battery was evidentely broken as it arrived ( LION battery ) wth only 8% charge and couldn't charge beyond 11%.After contacting Aliexpress seller, he handed me over a "tech guy", requesting pictures of the batteries, other than the one I already sent to him via chat.The response was ( in an way-worse-than-mine english ) : both batteries are NF2040HD but they are incompatible each other.Please note that before buying, I explicitly asked if they were.In any case, the seller offered to send me another battery, original this time, and I should have shelled out 152 USD, but he wanted the broken battery back.Well, I already spent 120 USD for the broken one, the shipping from Italy to Holland is 33 USD, so I requested a return label instead, and I would then add the missing 32 USD.The seller insisted I send back the battery, with no return label, and not to Holland from where I did receive it originally, but to China !The icing on the cake is : the battery the seller wanted to send me as replacement was physically incompatible with my original one ( 214mm long instead of 150mm ).I now have opened a request for refund, but I’m afraid the duel will be about the return of the battery :1) They don’t want to spend money to send me a return label2) Even if I wanted to send it back to the Netherlands at my expense ( 33 USD), it is still dangerous material ( lion battery ), with many bureaucratic difficulties to deal with3) In any case, they want the return battery in China, which makes it even more uneconomic and complex to manage.I tried also to open the dispute through Paypal with which I payed the battery, but once you try to do it, a pop-up appear telling me I have to contact Aliexpress, even if I originally payed with Paypal.As for the issue of the shipment "Holland or China", I think the original shipment was made from China, with the package hidden among many others to avoid bureaucratic issues about hazardous materials ( lion ).Once arrived in the Netherlands, the shipment was made by land from their dutch warehouse following the simplified procedure UN 3480.However, the label on the package says it was sent from the Netherlands and I will appeal to that.Will let you know....and please if you have any comment or suggestions on what I can do ( doable actions, not pure experimentalism that you would never do personally ) feel free to give your contribution...Andrea