10 Things to Consider When Buying ISR 21700 - 4500mAh

Author: Melody Liu

Jun. 05, 2025

Latest release Vapcell mah 12.5A battery - Page 21

You can contact Ali-express customer service and tell her you are a BLF member

Please visit our website for more information on this topic.

She can give you a better total fee

Thanks

Just wondering… why would anyone by a 800mAh 2A battery, if they can buy a mAh 3A for probably a few cents more? I bought my gold Vapcells from nkon for about 3 euro per piece. I don’t see any reason why would I get a worse battery, unless I need hundreds of them so the savings would actually matter.

Thanks for the link. In my case, 17track shows more information than postal.ninja.

I am not sure what to make of the information given below. AMS sounds like Amsterdam (Shiphol airport?) but ever since that time there was no more movement.


-12-21 10:45, NLHFDZ, Departed from OE
-12-16 14:01, AMS, Arrived at OE
-12-16 13:52, AMS, Arrived at OE
-11-27 22:18, CN, Posting
-11-27 20:18, DE, Posting
==

I hope so. Otherwise, there’s a slight chance it was seized by German customs. Customs will not be able to charge me any import tax for it (value is below EUR 25.00) but still they are (over)cautious about lithium batteries from outside the EU. I do not want to imagine what will happen after July when European customs regulations will demand import tax as of EUR 0.01 total value. :person_facepalming:

Obrigado MascaratumB. I see these yellow stickers all the time and I wonder what the heck they complain about (manual in local language, CE sign, etc.). Never mind…

I guess you are right about the 20€. I guess those 25€ come from a minimum fee they need to charge you over here, so as long as it’s below that number they will not charge anything.

I found this about the upcoming regulations…

https://ec.europa.eu/taxation_customs/news/new-guidance-document-import-and-export-low-value-consignments_en

https://ec.europa.eu/taxation_customs/business/vat/modernising-vat-cross-border-ecommerce_en

“(…) The introduction of the import scheme goes hand in hand with the abolition of the current VAT exemption for goods in small consignment of a value of up to EUR 22. This is also in line with the commitment to apply the destination principle for VAT. (…)”

OK, the T50’s are for real. They will replace my 40T’s. They tested at start in the neighborhood of 40T’s. Measured 24 amps on a slightly modded K1 SBT90.2, and 17.5 amps on a FT03 XHP50.2 with spring bypasses (GOLISI at 16.3 amps). Tested on a FT03 SST-40 at 9.35 amps, where the 40T tested 9.4 amps, and the 30T at 9.5 amps.

Loose Li-Ion Battery Cells - Voltaplex Energy

Voltaplex has your back

Never worry about quality when buying from Voltaplex. We make sure you have the latest, greatest cutting-edge battery, every time. 

Price

batteries are commodity cells, and as a wholesaler, we understand how important price is to your bottom-line. As such, we offer international shipping directly from Asia to save money in higher quantities.

Shipping

We offer worldwide shipping through trusted carriers including UPS, FedEx, and Special Line (Delivered Duty Paid - DDP) under Incoterms . If you require alternative shipping terms, such as Delivered at Place (DAP), or specific carriers, please contact us for a customized quote here.

21-day full refund

SINC(tr,es,it) supply professional and honest service.

All battery cell orders fall under our 21-day full refund policy to allow ample time to test for authenticity and performance.

Quality guarantee

Voltaplex values long-term relationships with clients and encourage our clients to performance test cells against official manufacturer specification sheets.

In Asia, batteries are binned by quality into A, B, and lower bins. C-bin batteries are often recycled from battery packs. Lower bin batteries will underperform and may be dangerous.

We will only provide A Grade cells, unless specifically required to otherwise, for example, some clients may prefer Grade B Chinese cells for low-cost ESS projects. We can also confirm batch-date code, run testing (like impedance/voltage/capacity), and handle other IQC requirements.

Voltaplex Data Sheet

Download the white paper here!

Voltaplex has your back

Never worry about quality when buying from Voltaplex. We make sure you have the latest, greatest cutting-edge battery, every time. 

Price

batteries are commodity cells, and as a wholesaler, we understand how important price is to your bottom-line. As such, we offer international shipping directly from Asia to save money in higher quantities.

Shipping

We offer worldwide shipping through trusted carriers including UPS, FedEx, and Special Line (Delivered Duty Paid - DDP) under Incoterms . If you require alternative shipping terms, such as Delivered at Place (DAP), or specific carriers, please contact us for a customized quote here.

21-day full refund

All battery cell orders fall under our 21-day full refund policy to allow ample time to test for authenticity and performance.

Quality guarantee

Voltaplex values long-term relationships with clients and encourage our clients to performance test cells against official manufacturer specification sheets.

In Asia, batteries are binned by quality into A, B, and lower bins. C-bin batteries are often recycled from battery packs. Lower bin batteries will underperform and may be dangerous.

We will only provide A Grade cells, unless specifically required to otherwise, for example, some clients may prefer Grade B Chinese cells for low-cost ESS projects. We can also confirm batch-date code, run testing (like impedance/voltage/capacity), and handle other IQC requirements.

Voltaplex Data Sheet

Download the white paper here!

Want more information on ISR - mAh? Feel free to contact us.

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