If you find something keep me posted, I've been looking for some time. Most likely end up with Victron, could always parallel them to get 30a 24v. Even with a 165a alternator, it might be marginal with 2 in parallel with accessories on like AC and high blower fan speed.Right you are. Looks like I would need to plan on 1200W+12 to24v DC converter.
To add to the confusion and intrigue, Kisae has removed the DMT-2430 from their website but if you google it, there's now a spec. sheet floating around for a DMT-2450 charger. If this is a forthcoming product it would be great for my needs if I could input ~14ish V 100A from my van's customer connection point and have it charge an 8s 280Ah EVE battery at 24v/50A and quit when the current drops to 10A.
Hey guys!
Has anybody bused this charger from AE?
Im waiting for my cells and later on want from time to time charge lifepo4 from truck alternater/starter battery
87.3US $ 10% OFF|Telun 4s 4 String 14.6v 15v 1a-30a Adjustable Car Charger Lithium Iron Phosphate Battery Solar Constant Current Voltage - Solar Battery Chargers & Charging Kits - AliExpress
Smarter Shopping, Better Living! Aliexpress.coma.aliexpress.com
No problem with manual switch since I dont want to have my LIFEPo4 always connected to starter battery. Generally I have an old Toyota 199x truck used for camping. Portable solar pannels and mppt. And dc compressor freezer. This system has been working for me for several years. Now want to use lfp instead of starter battery. As far as I understand this charger from AE is cc/cv charger suitable for lfp .Requires a manual shut off/on. Do you really want that? The higher end chargers will sense when the engine is on. The output voltage is too high. They say it's for Lithium, but it's OK for Lithium when you're actively managing it.
lol, not sure my vehicle can, but a/c chargers, the 240v one canThat would be 220A at 13V. Seriously? You have a dedicated alternator that can handle that?
No problem with manual switch since I dont want to have my LIFEPo4 always connected to starter battery. Generally I have an old Toyota 199x truck used for camping. Portable solar pannels and mppt. And dc compressor freezer. This system has been working for me for several years. Now want to use lfp instead of starter battery. As far as I understand this charger from AE is cc/cv charger suitable for lfp .
Yes, agree. Not so good... Probably can be used only if not charged to soc 100%. But BMS should disconnect then if it finds overvoltage cell than.With a voltage range like that, the chance of overcharging of the cells seems high to me
Yes, agree. Not so good... Probably can be used only if not charged to soc 100%. But BMS should disconnect then if it finds overvoltage cell than.
One if the tasks for me is not to overload alternator, since the model is from 1990s without any computer on board.
Thank you, makes sense to me tooThe general guideline here on the forum is that you don't want your BMS to be your first line of defense. Instead, your upstream devices should be smart enough, or configurable enough, to manage the charge profile so your BMS doesn't have to step in.
checked sticker on their charger - it says 14.6~14.8 +/-0.2%
Wonder if you could put a cheap regulator or step down converter in series before the battery.Technical parameter:
Product performance: DC to DC (constant current and constant voltage)
Application: 4 series (14.6V) lithium iron phosphate batteries
Input voltage: DC 10V ~ 15V
Maximum input power: 470W
Output voltage: DC 14.6V ~ 15V (± 0.2)
Output current: 1 ~ 30A (adjustable)
Maximum output power: 440W
Conversion efficiency: 93% ~ 97%
No-load current: ≈0.02A
Product size: 210mm × 110mm × 90mm
Applicable environment: -30 ℃ ~ + 60 ℃
With a voltage range like that, the chance of overcharging of the cells seems high to me.
When it comes to charging an expensive battery bank, don't go cheap. Buy something that doesn't come directly from China. Go back to the beginning of this thread and look at the DC-DC chargers that forum members are using.
Why don't you just buy the alternator controller from Norkyndesigns? http://nordkyndesign.com/product/nordkyn-electronics-vrc-200-charge-reference-controller/The issue there is that I'm trying to follow the charging recommendations of Nordkyndesigns and none of these chargers appear to shut down properly (when current gets down to .033C) and would seem to overcharge the pack (were it not for the BMS). Well, the Kisae DMT series actually does but they max out a 10A for the low current shutoff but that would work for a battery of up to 300Ah and I plan to install 560Ah. As best I can tell, all these 'smart' chargers aren't that smart and the 100% SOC shutoff is probably happening by the BMS, which doesn't seem good to me.
The Victron BMV-712 can control a relay so at this point I'm sort of leaning toward using a 'dumb' power supply and having a BMV shut it down when it gets to the desired SOC that I program it to. (I would still have an overkill BMS on the battery as well)