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Battery Charger for MHD Flashing
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12-09-2018, 09:19 AM | #1 |
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Battery Charger for MHD Flashing
Thinking about ditching my JB4 and trying MHD. I currently have one of the BMW battery charger/tenders but the charging max amperage is 1.25amps.
I was wondering if it would be possible to safely use a high end RC car battery charger during the flash process. Duratrax Intellipeak Ice (cost around $130 and $50 for a DC power supply). Here are the charger specs and a link to the manual. It doesn't mention anything about specifically charging lead batteries, only NICD/NIMH/LIPO/LION. I would think with a 6amp charge on 11.1v lipo charge profile, I should be fine? I can monitor battery voltage on the charger and will shut off it it goes about a predetermined threshold (say 14.5v). http://manuals.hobbico.com/dtx/dtxp4170-manual.pdf Input Voltage: 11-15V DC Battery Types, # of cells: 1-10 Nickel-Cadmium cells (1.2 - 12.0V NiCd) 1-10 Nickel-Metal Hydride cells (1.2 - 12.0V NiMH) 1-4 Lithium-Ion or Lithium-Polymer cells (3.6 - 14.8V Li-Ion/Li-Po) Battery Capacity Range: 100-9900mAh Fast charge current: 0.1 - 8.0A (1C max for Li-Ion/Li-Po) Fast charge methods: linear, reflex, impulse and 4-step Fast charge termination: peak detection for NiCd and NiMH constant current/constant voltage for Li-Ion/Li-Po (cc/cv) optional thermal cutoff for all battery types Peak Sensitivity: 0 - 25mV adjustable Trickle Charge Current: 0 - 500mA (n/a for Li-Ion/Li-Po) Top-off Charge: 0 - 1000mA (NiMH only) Discharge Current: 0.1 - 10.0A adjustable (2C max for Li-Ion/Li-Po) Discharge Cutoff Voltage: 0.1 - 1.1V per cell NiCd & NiMH 2.5 - 3.7V per cell Li-Ion/Li-Po Temperature Cutoff Range: 50 - 132° F Cycle Count: 1-10 cycles (n/a for Li-Ion/Li-Po) Cycle Cool-off Delay: 1-30 minutes adjustable Battery Memories: 10 battery memories Display Type: 8 x 21 LCD (168 characters max) Graphical Displays: graphs charge and discharge voltage curves Output Connectors: banana jacks (two adapter leads included) Motor Break-in: 1.0 - 8.0V selectable, 1 - 180 minutes, 10A constant, 30A surge |
12-09-2018, 09:34 AM | #2 |
Second Lieutenant
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I wouldn't use that seeing as how lead-acid batteries isn't on that list. You can get battery chargers for cheap, so why risk it? I use a Schumacher battery charger I got from a pep boys for $25.
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12-09-2018, 10:07 AM | #3 | |
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Quote:
I can manually set the adjustment to 10cell NICD or NIMH for 12V, and 14V cutoff. For example charging at 2 amps, as it gets close to 14V, it tapers off the charge to 1.9, 1.8, 1.7, all the way down to .1 amps as it reaches 14V. Basically this charger has a lot more adjustment than any of the cheaper auto specific chargers. Just looking for feedback from anyone else who has done it. |
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12-09-2018, 03:36 PM | #4 | |
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You overpaid, you can get one for $22.49 today (but that's NOT "trendy" or "pseudo-hi-tech" enough for many BMW owners). https://www.pepboys.com/schumacher-s...274?quantity=1 Pep Boys is probably discontinuing that model 'cuz people want to pay a LOT more for the pseudo-tech $100+ stuff. EDIT: If it appears too good to be true, it's probably false. I read that Pep Boys Schumacher product description too fast -- thought it said 6A to 1.5A automatic, but NO, it's basically just a trickle charger which is NOT what OP needs. Looks like the lowest price fast/automatic charger they carry is $63: https://www.pepboys.com/schumacher-1...319?quantity=1 I had checked HFT several days ago & noticed that they no longer carry their $30 model that does 6A to 2A (which I have used for years). It seems like charger prices are going crazy. Is it "pseudo-tech" market frenzy, or "Tariff-Man"? George Last edited by gbalthrop; 12-09-2018 at 03:53 PM.. |
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12-09-2018, 06:45 PM | #5 | |
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Drives: 2007 Black/Black 335i e90
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https://www.homedepot.com/p/DEWALT-3...EC80/300385140 Dewalt makes a 70amp too, but it's $200.00 |
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