![]() The controller also senses heavy loads on either battery to prevent the wrong battery from being inadvertently discharged. If neither battery is being charged, the batteries are fully isolated. When the coach is plugged into shore power, both batteries will be charged from the converter. When the coach is being driven, both batteries will be charged from the engine’s alternator. Unlike proper systems that only allowed charging the RV battery from the engine’s alternator, the Bi-Directional Isolator Relay Delay – Diesel chargers both batteries when either one is being charged. Adding a small dash-mounted switch will allow emergency starts of diesel engines, requiring up to 800 amps of starter current. Intellitec’s Bi-Directional Isolator Relay Delay – Diesel offers a new approach to charging batteries in an RV which uses an alternator. The LYFP bank, on its own BMS, etc, would also be useful in extreme cold situations (albeit at a much reduced capacity) until the main LFP banks were within charging/use temperature range.Intellitec’s Bi-Directional Isolator Relay Delay – Diesel #00-00839-000 I would keep the existing LFP banks (sunk cost, work fine), but add another dual use bank of LYFP that could be fused for time limited high current discharge connected to the starter circuit (main engine and genset). And, I could simplify my charging setup, as they have the same profiles. That makes fusing the starting and house circuits into two paths, and complicates life.īUT, I could see adding an additional lithium bank (dual use - house and starting bank), but using is in stead of LiFePO4 (LFP), adding a LiFeYPO4 (LFYP) bank. The yttrium allows lower temperature charging and discharging, exactly what I need. (2) starting the main engine of of a LFP bank can be a problem, even at proper temperatures. Normal current discharge for even the most egregious loads (in my case, the A/C and microwave) is still fractional C (under 240A at 12V). Starting circuit would have to be much higher, if only for the cranking time (1000A at 12V for up to 15 seconds I’m guessing). Effective, but a hack, and also subject to failure. I keep the house banks heated using battery heating pads. (1) my current LFP chemistry does not like cold, and I live in Colorado Springs at 7200’ above sea level. I’ve thought about eliminating the entire lead acid portion for a lot of reasons (huge weight reduction, much simpler system), but have held off for two reasons: Greg, Question: do you still run a mix of lead acid/agm with your lithium banks? The low internal resistance of lithium banks means monitoring the charging sources so they aren’t stressed and won’t melt. Multiple charging sources into multiple battery banks with differing chemistries is challenging. I too replaced those components for those same reasons (slightly different components, same idea ) so it makes sense why the missing relay seems to have no effect. I would be interested to see an expansion of my thoughts on this incase more detail is needed. ![]() One more thing, I have found that many of the small black relays on the coach system are the same and available at places like Amazon. My point is: All of these orignal components work well for lead acid or agm batts. (Isolator delay relay delay Diesel) And battery isolator relay. To be clear, I removed 3 major original pieces, charging 3 wire brick (trickle charge chassis batt. Basically what it does is allow charging of house Lithiums, chassis lead acid batteries and then gives the alternator a rest (Cooling) these generally operate on a timing system rotating among all 3 stages while you drive. I installed a Li-bim (Lithium battery isolator manager) in place of the old isolator system components. I my case, the Lithium battery bank for solar panels is so large, it can pull way more energy/amps than the alternator can supply on a single steady charge so, something has to be installed to keep from cooking the alternator and that is an isolator of some sort. The problem on the system can be over taxing the battery charging alternator on the engine while long distance driving. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |