Rechargeable AA pack question
 

This is the battery pack that goes with my old Dinotte 200L headlight. I don't like it. You have to remove and remount the individual batteries in order to charge them. I've also had to put a velco strap around the batteries in order to keep them from coming loose during a ride and disconnecting.
Is there a modern, one-piece rechargeable battery I can use for this light? Pretty sure it would be a 6 volt battery pack that would have the same connectors, same amperage.
Or, is there a charger that could charge this pack while it is assembled? That way I could tape it together and leave it that way.
Thanks.
https://cimg7.ibsrv.net/gimg/bikefor...41970a482e.jpg

I meant for this to be posted in Electronics, Lights, etc. My bad.

Here you go:
magicshine.us/product-category/bike-light-accessories/batteries/?orderby=price-desc
enerprof.de/shop/batteries/enerpower-kreuzberg-plus-battery-7-4v-8500mah-with-round-plug/
enerprof.de/shop/batteries/enerpower-adlershof-battery-7-4v-6800-mah-round-plug/
enerprof.de/shop/batteries/enerpower-pankow-battery-74v-3500-mah-with-round-plug-ga/
enerprof.de/shop/batteries/enerpower-moabit-battery-7-4v-3400mah-round-plug/

Thanks. Ummm. I got a question. 7.4 volts equals 5 AA's. My battery pack holds 4 AA's. Wouldn't those over-run my voltage?

They would certainly put out a higher voltage than your current pack. Whether that would hurt the light is another question and depends on how it is made. Since your original pack takes 4 NiMH cells it would be putting out just a bit under 5V, so any battery pack with a USB output would be a suitable substitute as long as you make an adapter for the physical connector.

Booth true.
Good idea with USB!
There are adapter cables from USB-A to DC5521 and others, so it could be you don't even need to tinker ;)
startech.com/Search?search_term=USB2TYPE&sort=1&sort_dir=1&fq_field_product_facet_db_cable_length_ft=6.6

I will look into this. I saw Amazon has shrink-wrapped 4 packs of rechargeables with various connectors.
Can you charge these off a USB port?

I wouldn't recommend this. For charging you want a source that will initially put out a high current for fast recharging and then detect when the battery is nearing full charge so the charger shuts off and prevents an overcharge. A USB output port just supplies a constant 5V supply so it will initially charge slower than desired and eventually result in an overcharge.

Would this, or something similar, work? Amazon has bunches of them, meant for RC cars.
https://www.amazon.com/dp/B07D38V953/ref=sspa_dk_detail_5?psc=1&pd_rd_i=B07D38V953&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=f0dedbe2-13c8-4136-a746-4398ed93cf0f&pd_rd_wg=xhMDo&pf_rd_r=CW3VPMT6Q0KG9MX057T9&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&pd_rd_w=tL8Fl&pf_rd_i=desktop-dp-sims&pd_rd_r=58b823b1-f115-11e8-a0b8-b3ecfb8dcc27
I can change/solder new connectors.

Yes, you can use it directly but 700 mAH capacity isn't much for a bike light. I have a $5 100 lumen bike tail light that has a 650 mAH internal lithium polymer battery and my Blitzu Gator 300 lumen front light has a 1200 mAh battery. I took it apart to see what was inside so I know that value is correct. It was a Christmas gift I will never use so I wasn't worried about destroying it (which didn't happen). I prefer a simple XML-T6 focusable flashlight powered by a Panasonic 3400 mAH 18650 battery. It's brighter than the Gator and simple to switch out the battery should it get dim during a ride.

It would work, but not well. These cells are the older NiCd chemistry which only had about a third of the capacity of the NiMH cells you currently use. So your light would only run for a third as long. I didn't even know that NiCd cells were still being made. Poor capacity, some charging cycle issues, and very bad environmentally if not disposed of properly - so they've been replaced by NiMH and various Li chemistries.

Why not USB? Would be much more flexible and allows higher capacity.
lygte-info.dk/review/Review%20USB%20battery%20box%20Tomo%20M4%20UK.html
lygte-info.dk/review/Review%20USB%20battery%20box%20TLife%20Power%20bank%20TC-01%20UK.html
soshine.com.cn/a709.aspx

Bless your heart, thank you. That gives me something specific I can go on.
Here's a picture of the light, BTW. It's an older model. But I might as well use it instead of just letting it sit around. It's a Dinotte 200L. Probably 10 or more years old. See those rubber bands on the battery pack? That's how much of a pain this thing is to use. Can you imagine assembling and disassembling this thing every time you use it?https://cimg0.ibsrv.net/gimg/bikefor...27aa9d1da8.jpg

Maybe these links helps you too ;)
banggood.com/Soshine-E3S-4-Slots-18650-Battery-Charger-Universal-Power-Bank-Battery-Case-p-1190165.html
banggood.com/search/18650-button-top-protected/0-0-0-1-4-44-0-price-0-0_p-1.html?direct=7
banggood.com/5pcs-DC-9V-Battery-Button-Power-Cable-Tieline-For-Arduino-p-962108.html
banggood.com/1_5m-Micro-USB-Power-Supply-Charging-Cable-With-ONOFF-Switch-For-Raspberry-Pi-p-1178158.html

those battery holders are @ Radioshack (if one is left, near you)
snap connectors common to 9v batteries powering electric guitar Efx pedals ..

Can you Solder? that skill opens up a lot of DIY options .. inline power supply plugs
& batteries with solder tabs..
Then you can use things like wax potting the whole thing in a water bottle, or similar..

Yup. I can even silver solder. I'm just trying to make this thing more user friendly. When it comes down to messing with that battery pack or grabbing a flashlight, the flashlight wins every time.