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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
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Description
ISDT A4 Air Battery Charger, Smart AA/AAA Battery Charger with Bluetooth Connection FunctionThe ISDT A4 Air is an ultra compact, intelligent universal battery fast charger designed for 4 bay cylindrical battery maintenance. Outfitted with four completely independent physical charging channels, the unit handles dynamic power distribution across a diverse range of battery chemistries and sizes simultaneously. Built with an all powerful USB Type C input architecture and full support for integrated wireless operation, it allows users to monitor
The ISDT A4 Air is an ultra-compact, intelligent universal battery fast charger designed for 4-bay cylindrical battery maintenance. Outfitted with four completely independent physical charging channels, the unit handles dynamic power distribution across a diverse range of battery chemistries and sizes simultaneously. Built with an all-powerful USB Type-C input architecture and full support for integrated wireless operation, it allows users to monitor real-time charging cycles, program tasks, and initiate firmware updates straight through a convenient mobile application interface.
Check out all our Chargers and the rest of our ISDT Products!
Features:
- 【Convenient Operation】Perfectly compatible with phone power adapters, USB ports, portable power banks and car chargers, auto-matching with the USB charging devices output power. Fast charging is possible when combined with a QC adapter.
- 【Multifunction Charger】Automatic battery type identification, the A4 Air will auto-match the optimal charging algorithm, fully compatible with NiMH, NiCd, Li-lon and LiFePO4 battery.
- 【Full Color LED Status Indicator】The battery level, type, operation mode and information can be shown clearly by indicators with various color.
- 【Real Full-time 4 Independent Charging Channels】Compact but not simple, with 4 real independent channels for intelligent current regulation, supports hybrid charging of different types & sizes of batteries.
- 【Integrated Protection Design】Innovative battery performance detection mechanism, intelligent power allocation, auto-adjust charging parameters.
Specifications:
- USB C port for power input and PC connection
- AA battery negative plate
- AAA battery negative plate
- Battery positive plate
- LED LightsSmart Charger: A4 Air
- Input Power: DC 5~9V/1.5A
- Max Charging Power: 10w
- Max Charging Current: 1.0A/slot
- Battery Size: AAA,AA,10500,12500
- Battery Types: NiMH,NiCd,Li-lon,LiFePO4
- Operating Temperature: -10℃-40℃
- Dimensions(LXWXH): 59X63X25mm
- Weight: 36g
Package Includes:
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1 * ISDT A4 Air 4-Bay Smart USB Battery Charger
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1 * High-Speed USB Type-C Cable
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
It really is water resistant
Size: 6 Fl Oz (Pack of 1)
This stuff is great. Normally when buying a green sunscreen, I have to sacrifice the aerosol feature and default to a lotion. This has a very neutral scent and sprays easily and evenly. It is zinc-based, so it will leave a white haze on your skin. I did need to rub it in after spraying, which helped minimize the white hue. It does love bathing suits, so be prepared to also rub the zinc powder into your bathing suit, otherwise it will be spray painted white. I used this while tubing and did not get burned--just nice and toasty-tan. The biggest downside is that it has a very slight stickiness/tackiness to it. I showered twice before I finally felt like it was all off my skin. But at least it didn't come off in the river!
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Reviewed in the United States on September 3, 2019
★★★★★ 1
Leaves skin WHITE and chalky!
Size: 6 Fl Oz (Pack of 1)
This sunscreen is the worst. it leaves your skin feeling chalky, and totally white. it is difficult to get it off. I accidentally bought it twice two years apart thinking it was the one I liked, but nope. floated the river and even trying to rub it off in the water wouldn't remove the white cast on my skin all day. If you don't mind chalky skin and looking white, then go for it.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Great convenient nontoxic spray sunblock option that really works!
Size: 6 Fl Oz (Pack of 1)
I am very serious about nontoxic products for my family, particularly for my young children. I also insist on sunscreen almost every day. The unfortunate thing is that I really dislike actually applying sunscreen! lol! I don't mind on normal mornings (and we usually use the Green Screen Organic Sunscreen SPF 32 Original - Vegan - Gluten-free or Babo Botanicals SPF 40 Daily Sheer Facial Sunscreen, Unscented), but when we are on the go or at the beach, I wanted to make it as easy as possible to apply. We bought this for a beach getaway over the summer and it really surprised me. It is an easy application (shake, spray, rub) and it really worked. Two children and two adults used this on the entire body and face along with some extra stick protection on the face. I reapplied a few times, but not religiously and no one got a burn... no one really even got a tan. It says that it is sweat and water proof up until a certain point and I believe it really is because we were in scorching heat on the beach (in the water too) and no one had any issues. The great thing is that it really did make application easy so I think we reapplied more appropriately than we would have with a regular tube of sublock. I am not experienced with spray sunblocks so I cannot compare with others, but I believe it is similar. Note, since this is a nontoxic sublock that is zinc based, it does go on white and also sprays whatever it gets on white, but I didn't have any problems. It rubs in very easily and seemed to come off of carpet, clothes, etc. very easily as well. This is now a regular go-to for us even on non-beach days.
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Reviewed in the United States on November 12, 2018
★★★★★ 3
Ok, but not great for the price.
Size: 6 Fl Oz (Pack of 1)
The good: 1. Doesn't have that typical sunscreen sent. (I hate that smell so that is a major plus for me.).
2. Doesn't burn my eyes
3. Doesn't clog my porse (some sunscreen gives me back acne)
The bad: 1. On my skin (And I suspect anyone who has melanin ) it leaves a chalk-like film that makes me look ashy.
2. When you spray it IT GETS EVERYWHERE! On the floor, walls and pretty much tow feet from wherever you are standing.
3. I bought this at the 1st of the month it's 18th and the bottle is EMPTY! And I didn't even use it every day (obviously only used when I was outside in the sun.)
4. Feels chalkie on the skin.
Overall while not a bad product, I will not be purchasing again too many issues and cons for the price.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
My favorite sunscreen
Size: 5 Fl Oz (Pack of 1)
The BEST sunscreen I have tried. I LOVE this unscented Coola. It goes on smooth and doesn’t feel sticky at all, you will forget you have it on. It truly is unscented and so light. It’s also effective protection from the sun.
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Reviewed in the United States on August 31, 2025