V5 Robot Battery Charger

[Rojo Scherer]

Chargerfor use with our 12V Slim Battery. The output is wired with an XT30 male connector for charging. For the input, the battery charger has an IEC C13 power cord to standard, grounded, North America wall outlet plug (NEMA 5-15).

All rechargeable batteries have a finite lifespan. Factors that affect lifespan include the number of discharge/charge cycles and the average loading of the battery. The following best practices can help maximize the lifespan of your battery:

Dual Pro Recreation Series (RS3) 6Ah x 3 bank Battery ChargerThis charger is a great tool for competition robotics teams and hobbyists using Lead Acid batteries. Dual Pro chargers charge bat...Read More

This charger is a great tool for competition robotics teams and hobbyists using Lead Acid batteries. Dual Pro chargers charge batteries to 100% specific gravity every charge, and are able to adjust current in the absorption and finish stages based on the battery's communication with the charger

There are 3 unique charging banks included in this charger, meaning that you can charge three batteries at a time. Each bank has a capacity of 6 AMPs. This charger supplies a safe amperage level to quickly charge 12V lead acid batteries. The charger is engineered for occasions which need a charging system that may require the battery to be left on the charger for days at a time.

These chargers are on the cutting edge of technology. Dual Pro chargers can detect as low as 6 volts on a 36 volt system and 8 volts on a 48 volt system. Low voltage detection eliminates jump starting and service calls which save you time and money.

Dual Pro goes beyond what normal chargers do. Normally your average charger only charges your battery until it gets warm enough and your battery tells your charger that it's done. That is not the case for Dual Pro, they acknowledge this and also know that most batteries only get 80% of their full charge from ordinary chargers.

The DeltaVolt charge profile changes that. By giving you a full 100% charge, your batteries runtime will increasing by 10-15% per charge which will increase your overall battery life by 20-25%. Pay a little bit more now for your charger and save a lot more money with longer battery lives and having no more service calls.

What caused the battery to be over discharged in this way? Was there an issue that you experienced? As noted in our documentation, you should avoid discharging our battery below 12V, and never below 10V.

The BlueROV2 does not have a low voltage cutoff, and voltage should be monitored to avoid over discharging. We generally call a battery discharged and pull the ROV out of the water once the voltage starts dipping below 13V. Note that these voltage guidelines are specific to our battery and may not be appropriate for other batteries, especially lithium-polymers batteries, which are more sensitive to over discharging.

Thank you for your reply, I might have run it below the recommended 10v and then failed to turn of the ROV after the dive. Trying the lead acid mode did not work. I am aware that connecting the two batteries is not the best way, so any other way would be welcome

To clarify, 12V is the minimum recommended voltage to discharge to battery to during use. 10V is the absolute bottom end discharge voltage of the cells, but discharging down to this level may significantly impact the lifespan of the pack. I would recommend keeping the pack above 12.0V at all times.

@luisgamez 14.8V is the nominal voltage of a 4S battery like ours, but it is fully charged at 16.8V. Discharging from 16.8V to 14.8V is roughly half the capacity of the pack, and 14.8V to 12.0V is roughly the other half. Run time is extremely dependent on the actual environmental conditions and flying style, but we find 3-4 hours total is roughly accurate for most realistic use cases.

I just have the same issue, is giving the LOW VOLTAGE and is not charging.

Have read all and what will be the best way to recharge my battery, I am have both

products from Bluerobotics, the battery and the charger.

Waiting for best hint.

Thanks

Jose

What I ended up doing it charging this one stack with my adjustable bench top power supply. (Connected on the 4S connector) Gradually increasing the voltage until they were at the same voltage as the rest.

Hi Forum

I by mistake did over-discharge my BR 18Ah battery to 2V and it was not possible to charge it with the LIpo charger. I used a power supply and limited current to 1A and over a period of 5 hours charge it to 12V. And I monitored the balance between cells and no larger difference. After that I could charge battery with the LiPo charger without any problems. After that I have tested the capacity of the battery and it still have the original capacity of 18Ah

NOCO Genius Gen Series 5A 1 and 3 bank Battery ChargerThis charger is a must have tool for competition robotics teams and hobbyists using 12-volt lead-acid (flooded, gel, AGM) or lithium-ion batter...Read More

NOCO Genius Gen Series 5A 1 and 3 bank Battery Charger

This charger is a must have tool for competition robotics teams and hobbyists using 12-volt lead-acid (flooded, gel, AGM) or lithium-ion batteries. NOCO chargers charge batteries to 100% specific gravity every charge, and are able to adjust current in the absorption and finish stages based on the battery's communication with the charger.

There are up to 3 unique charging banks included in these chargers, meaning that you can charge up to three batteries at a time. Each bank has a capacity of 5 amps. This charger supplies a safe amperage level to charge 12V lead acid batteries quickly. The charger is engineered for occasions which need a charging system that may require the battery to be left on the charger for days at a time.

We have installed your choice of SB50 and SB120 connectors on each of the charging circuits, which makes this charger ready for FRC robot batteries right out of the box. The first time you use it, be sure to press the "MODE" button to set each bank to "AGM" for FRC Batteries.

Ensure that the batteries have had sufficient time to cool before charging. Neglecting this step may be detrimental to the longevity and overall performance of the batteries.

Features

I am trying to use a standard micro USB plug to charge the batteries inside. It appears that the TP4056 is a common solution, providing a 1A charge rate. I have a few questions regarding how the wiring will be arranged.

The cells will start, stop and always be used equally. Is there any problem with charging in series for just these two? I've seen concerns regarding having a separate wiring set up to charge in parallel.

The battery holder only has a single positive and single negative coming out of it. Can I directly wire in the charging supply to the battery holder leads and also have the leads tee off to the motor power supply board (L298N)?

Is it possible to use a power bank circuit board to charge each cell individually per USB output?

Outlet > micro usb cable > power bank circuit board > 1st USB port to One battery > 2nd USB port to 2nd battery

Samsung did have quite a bad experience with them. Although I do admire their response and investments into a massive testing lab to turn the fiasco into a lesson instead of a loss. This, and the hoverboard incidents are the reasons why I am doing as doing research as possibly before doing so. Definitely don't want to burn anything up!

ericfragola:

Is it possible to use a power bank circuit board to charge each cell individually per USB output?

Outlet > micro usb cable > power bank circuit board > 1st USB port to One battery > 2nd USB port to 2nd battery

Two USB power adapters plugged into two wall outlets might work but there's still a high probability of burning something if those adapters aren't properly isolated. Plus, if you have two USB sockets on your robot, someone at some point in the future (probably you) will forget and you'll destroy a laptop.

Look at hobby chargers intended for RC toys. These are mostly going to be 3S devices but I'm sure you can find a 2S one or a higher one that's capable of just charging two cells together. You may pay US$70 for such a device.

5V USB supply > TP4056 > 2x 18650's ran in parallel > vooltage booster > L298N motor controller > motors

The 18650's will have a high discharge amp rating to satisfy the voltage booster, as the booster doesn't magically make higher volts out of nothing

Option 2:

Uses the sane layout but the voltage booster ran before the batteries and ran to a 7.2V holder with two 18650s ran in series. But it sounds like charging in series is a problem. Also using the voltage booster to charge the batteries limits me to the 1A max draw of the charging chip...

The H6 PRO Lithium Battery Charger is a high-power lithium balance charger, perfect for use with all Blue Robotics lithium batteries! With built-in balancing and discharge capability, your batteries can safely be kept in top condition for maximum performance and lifespan! A nominal fixed 10A charge current means you can fully charge a high-capacity lithium battery like our

Lithium-ion Battery (14.8V, 18Ah) in about 1-2 hours. For even more functionality, the firmware can be unlocked to enable charging other battery chemistries at variable currents.

Although they are safe enough to be used in everyday devices (phones, laptops. etc.) batteries have a high energy density and must be treated with care to ensure proper safe operation and a long lifecycle. When using the charger, be sure to follow proper procedures, and always read the battery manual before charging a new battery.

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