Adjustible Constant Current Load Devices

[rgleason]

Starting with the more expensive devices.

NHR 9300 Series High Voltage Battery Test System -Regenerative

Aim-TTi LDH400P DC electronic load (161-5840)

Electronic Load – the perfect test solution for dc power sources (AIM)

https://www.circuitspecialists.com/p...ectronic-loads

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DIY

DIY Load Tester for Batteries and Power Supplies
(Down at the bottom) Fairly elaborate.
Don't know if it will take the current needed 11.25amps.

DIY Simple Variable High Current Load
This might be useful for making a simple constant current device.
There are some good examples.

Using Resistors
https://electronics.stackexchange.co...test-load?rq=1

[john61ct]

I think already mentioned this for your 6V equalizing, should also be good for LFP balancing and whatever-chemistry charging and load testing even 12V lead.

Completely separate dual channels, but they can be used together for both charging and regenerative discharging.

Does not include an AC power supply, DCDC only as shipped, but likely just fine running off a marine quality shore charger in power supply mode or with a buffer battery on the input side.

iCharger 4010 Duo

https://www.progressiverc.com/icharger-4010duo.html

manual https://www.progressiverc.com/media/...o%20Manual.pdf

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Specifications
Maximum charge power: 1400W per channel, or 2000W in synchronous mode
Charge current: 50mA-40A per channel, or up to 70A in synchronous mode
Discharge power: 130W per channel, or 200W in synchronous mode
Maximum regenerative discharge: 1400W per channel, or 2000W in synchronous mode
Maximum external discharge power capacity: 1600W @ 40V/40A, or 3200W in synchronous mode
Balance bleeding current: 1.2A per channel, or 2.4A in synchronous mode
Voltage readout resolution: 1mV (0.001V)
Internal resistance readout resolution: 0.1 Ohm
Balance accuracy: 10mV
Input voltage range: 9-50V DC
Maximum Input current: 65A
Maximum LiPo/LiIo/LiFe(A123): 10S per channel and in synchronous mode
Maxiumum NiCd/NiMH battery cell count: 25 cells per channel
Maximum Pb battery cell count: 18 cells (36V) per channel
PC Connectivity: USB port
Dimensions: 210x140x80 mm
Net Weight: 1470g