DaveS
Lil-Rokslider
Yeah but we all want the ability to charge from a battery pack away from outlets and vehicles.
I understand. There are some battery packs that provide a vehicle type plug. I guess I should have mentioned that but others have.
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Yeah but we all want the ability to charge from a battery pack away from outlets and vehicles.
I understand. There are some battery packs that provide a vehicle type plug. I guess I should have mentioned that but others have.
I'm glad I started this thread, some great information so far. I think I'll look into getting some of those Lithium Ion AA batteries and maybe another battery pack. I really like the idea of the solar panel charger, I see one of those in my future.
David - For what it's worth, I've not been able to successfully charge my Rino 650's lithium-ion battery using a 5v/2.4a USB power bank and the 5v to 9v Kuncan step-up cable that tToadman refers to above. I've tried the concept using two different external batteries, and each time 70% of the energy coming from the power bank failed to go into my Rino's battery. 20% loss is expected, but 70% loss was discouraging.
I consequently abandoned the idea of using a conventional 5v USB power bank and the direction I'm moving in now involves using an AiLi power bank that has two 5v USB ports (that I'll use for charging my InReach & digital camera), AND a separate DC jack that outputs 9v/1.5a DC. The Rino's lithium-ion battery charging specification is 9v to 10v and 1.4a max. Hopefully, the separate DC jack of the new power bank will charge the Rino while simultaneously reducing the energy loss to an acceptable 20 or 25%. I've got my fingers crossed while the new equipment is in transit.
The reason I've been jumping through all these hoops is to avoid using the accessory AA battery pack. The Rino will not transmit at 5 watts unless it's using its regular lithium-ion battery. If I were to simply pop on the AA battery pack when my lithium-ion battery died, all my future transmissions would be at the 2 watt power level.
Dog812 is a member of this forum that successfully charged his Rino 530HCX using a similar USB power bank that has an additional 9v/2a DC output jack. You may want to study his May 2015 post titled "Charge a Garmin Rino in the field multiple times!"
One final thing - my Anker PowerPort Solar panel outputs 5v/2a max from a single port. In theory, my Anker solar panel should charge the AiLi power bank, as the AiLi's Micro-USB input calls for that same 5v/2a max. If you're interested, I'll update this post with my results once the new equipment arrives. Hope this info helps...
This modified cable now is able to charge the Rino from two types of external USB battery chargers that I already had for phone charging on trips. ... If any may be seeking to do this, it works.
To charge my rino I bought a 12v car charger then bought a female 12v to USB adapter off amazon
StickSlingers - how many full and partial charges of your Rino's battery can you get out of your Dark Energy to 12v setup? The best I've been able to do is a 76% charge of my Rino 650's battery using a MyCharge All-Terrain 5200 power bank. I'm boosting the 5v USB output up to 9v using a customized Kuncan cable, which I got off Amazon.
I've been researching for a few months on a system that will work for charging my Rino for an upcoming backcountry hunt. It seems like much less hassle and money to just buy an extra battery or two. I am only going to need mine for 6 days without access to electricity. I found replacement batteries for approximately $55, and the alkaline pack for $20. I think I can easily get 2 days off a full charge. Seems like a no brainer to me.
I agree with jSmith that tToadman's Kuncan cable method WILL charge a 500 or 600 series Garmin Rino, but the Kuncan method appears to cause pretty large energy losses. I don't want to carry more 18650 cells than necessary, so limiting the charging system's energy loss is important to me.
I assembled a Kuncan cable myself, then have used it five times to charge a Rino 650. See attached picture for my test results. I began each test with a 100% drained Rino battery, and a 100% full powerbank battery. I charged the Rino until the powerbank was totally drained, then noted the battery percentage that appeared on the Rino's home screen. It appears to me that boosting the voltage twice (from 3.7v to 5v inside the powerbank itself, then again from 5v to 9v inside the Kuncan module) causes larger than expected losses - from a low of 30% to a high of 44%.
For example, I would have been happy if my 5200mAh powerbank would have put a 87% charge on my Rino. 5200mAh at 3.7v (the internal battery voltage inside the power bank) gets lowered in a perfectly-efficient system to 2600mAh after the energy gets transferred inside the Rino's 7.4v Li-Ion battery. In reality, these systems aren't perfect. The 2600mAh figure will be decreased by energy losses (generally 10% to 20%) caused by the voltage conversion circuitry itself and released heat.
Since I'd like to get the losses down to the 15% to 20% range, I've ordered a 4-cell battery box that uses 18650 Li-Ion batteries and has a 9v/1.5a DC output. What I'm hoping to find is that doing one voltage conversion inside the battery box (from 3.7v to 9v) instead of two separate voltage conversions (the Kuncan method) will be a lot more efficient and allow me to carry fewer 18650 cells.
If my 4-cell 18650 battery box can charge the Rino's battery 2.33 to 2.5 times, that will tell me that doing one voltage conversion instead of two has reduced the losses down to 15 - 20%. At that point, I'll be satisfied that I've reduced the weight of my charging system as much as possible, and I'll be able to go on to other things!View attachment 53408