Re: [RE-wrenches] Lithium battery cable lengths

yes, each 2kw battery module has on-board electronics which the BMU regulates, trying to maintain equal charge/discharge. This is viewable real-time in the BI HV Ageto controller display (per BMU cabinet). My particular HV install has a 50' DC bus w/ inputs and outputs attached at various points

Re: [RE-wrenches] Lithium battery cable lengths

Good evening Barton and Jay, Is this recent that Blue Planet’s tech support says not to worry about parallel cable lengths? They’ve said for years to try and match them and it is even noted that “All parallel battery connections to be of equal length” on the three line diagram on page 31 of the

[RE-wrenches] High to normal SG

What’s going on with a battery bank that reads 1.275 SG on all the batteries but one, which has cell readings slightly higher. The bank is probably 7 years old and this is not a full time residence. It’s shutting down with LBCO error. I need to go check the site, but I’d expect a dead or weak cell

Re: [RE-wrenches] High to normal SG

Jeremy,             My response is welcome to the world of FLA batteries.  I see variations like this all the time.  Are you using a refractometer or hydrometer, are all the cells same manufacture date, are some cells warmer than others, terminal connections all clean?  I've tried "correcting

Re: [RE-wrenches] Tesla Powerwalls

Same situation here. Supply completely dried up and we got the same, tired excuses. Lot's of unhappy customers who point the finger at us. We have finally started getting some shipments but nothing close to the promises we received over a year ago. On Tue, Jul 20, 2021 at 5:04 PM Blake Gleason wr

Re: [RE-wrenches] High to normal SG

Adding to Bill, You need to find out what caused the LBCO? A battery summary screen will "show" when this happened in the 24 hour day? It may have nothing to do with the battery and may be load related? Since they are 7 years old, they may have good SG but very little capacity left! Dave Ang

Re: [RE-wrenches] High to normal SG

Hi Jeremy I would like to know brand and model of battery first. Jay Peltz power > On Jul 21, 2021, at 7:22 AM, Jeremy Rodriguez wrote: > >  What’s going on with a battery bank that reads 1.275 SG on all the > batteries but one, which has cell readings slightly higher. > The bank is proba

Re: [RE-wrenches] High to normal SG

And what color is the electrolyte? > On Jul 21, 2021, at 8:02 AM, Jay wrote: > >  > Hi Jeremy > > I would like to know brand and model of battery first. > > Jay > Peltz power > >>> On Jul 21, 2021, at 7:22 AM, Jeremy Rodriguez >>> wrote: >>> >>  What’s going on with a battery bank that

Re: [RE-wrenches] High to normal SG

Deka 8L16 Jeremy Rodriguez Solar Installation / Design Expert All Solar, Inc. 1453 M St Penrose Colorado 81240 Sent by Jeremy's iPhone. Sorry for typos and shorthand. On Jul 21, 2021, at 8:24 AM, Jay wrote:  And what color is the electrolyte? On Jul 21, 2021, at 8:02 AM, Jay wrote:  Hi Je

Re: [RE-wrenches] High to normal SG

Hi Jeremy; Based on the age, and brand, I'd say its time for new batteries. Steve's comments, as always, are great information.  From my experience, L16s are fairly unpredictable, and you could start seeing cell failures this next cold season. Ray Walters Remote Solar 303 505-8760 On 7/21/2

Re: [RE-wrenches] High to normal SG

Okay Is there a quick way to run on just one string? Or should I say determine which batteries would make a good string. I’d normally say, find the best batteries based on specific gravity and use them, but in this case all specific gravity‘s seem good. Jeremy Rodriguez Solar Installation / D

Re: [RE-wrenches] High to normal SG

Steve, Do you measure voltage of each battery with them disconnected or as is. Jeremy Rodriguez Solar Installation / Design Expert All Solar, Inc. 1453 M St Penrose Colorado 81240 Sent by Jeremy's iPhone. Sorry for typos and shorthand. On Jul 21, 2021, at 8:59 AM, Steve Higgins wrote:  Jere

Re: [RE-wrenches] High to normal SG

FLA batteries cells fail generally in two manners. Open Cell and Shorted. Open Cells are more resistive and "Eat up" charging voltage which denies voltage and charging potential to the rest of the bank so the entire bank sags. This is the most common type of failure. Shorted Cells are less res

Re: [RE-wrenches] High to normal SG

Jeremy... A single string of 6v L16 @ 48 volts you will want to run about 30-40 amps of discharge current... This with losses is about 1500 to 1800 watts. Make sure the battery is charged, Run the loads Measure the Batteries... my bet is since you are getting a LBCO drop out the battery in qu

Re: [RE-wrenches] Lithium battery cable lengths

Jay, wrenches Does not sound like fortress or blue planet, are these 12's or 24 volt packs, no interconnecting BMS so resistance is not in check, voltage and SOC neither. If you interlace the packs AKA 1,3,5,7,6,4 rather then 1,2,3 can you reduce or even balance the cables. Jerry On Tue, Jul 20,

Re: [RE-wrenches] High to normal SG

You measure each battery with a voltmeter while under load. You do not have to measure them out of the circuit. Give me a call at 902-597-4020 and I talk you through it.

Re: [RE-wrenches] Lithium battery cable lengths

HI Nick, Yes my friend called them directly, he was working with them on this project and they said no problem with unequal cable lenghts. jay > On Jul 21, 2021, at 2:27 AM, Nick A Lucchese wrote: > > Good evening Barton and Jay, > > Is this recent that Blue Planet’s tech support says not

Re: [RE-wrenches] Lithium battery cable lengths

Remember that cable resistance isn't the only thing to think about for battery cables from inverter to batteries... Cable inductance can matter too which is made better by keeping positive and negative cables close together and also keeping them short as possible. boB On 7/21/2021 3:19 P