In today's video, I will be comparing two in-car 12v DCDC chargers, the Redarc BCDC1250D vs the Enerdrive EN3DC40+. I will explain the specs and features of both DCDC Chargers and even reveal a few undocumented features for the Redarc BCDC1250D. I will also give my opinion on the Pro's and Con's of both 12v DCDC Chargers for use in a 4wd and especially with LiFePo4 Lithium.
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UPDATE+++++
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In my video, I explain the boost mode time limit can be reset simply by disconnecting the load for instance restarting the car this is incorrect the boost time limit can only be reset
by disconnecting from all sources (input and output) which is usually not practical to do.
Here is how the boost charge time limit works:
The logic of the BCDC1250D includes:
• a 2 hours timeout in Bulk (also called Boost) where the unit will automatically move to Absorption / Float
• a total of 4 hours (from the beginning of Boost charging) before the unit can return to Boost charging
These timeouts were specifically introduced for safety reasons to avoid damage of batteries in harsh conditions (especially high-temperature environment) and to protect the charging of smaller capacity batteries and avoid them being damaged by a high charge rate being applied for too long.
For example, a large 200Ah lithium battery bank requiring 4h of full charging at 50ah, would be charged 2h in Boost, 2h of Absorption/Float (which will still provide some charging), 2h in Boost, etc until the charging is complete.
Please watch • Redarc BCDC Boost Char...
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