accuaracy of Wizbang jr

ldiorio
ldiorio Solar Expert Posts: 48 ✭✭
just installed a Wizbang Jr and connected it to a Classic 150 to help me monitor the SOC of my 415AH Fullriver batteries(48v)
this morning after a full charge overnight the Wizbang indicted a 100% SOC but a 402AH level in the batteriesis this just normal loss in the system(cables) or inaccurate Wizbang Jr

Comments

  • Mountain Don
    Mountain Don Solar Expert Posts: 494 ✭✭✭
    When setting it up you enter info such as battery efficiency. That is reflected in that figure of 402 AH. Temperature also has an effect on the capacity although off hand I forget if temperature is taken into account by the WB JR (if there is a BTS connected).
    Northern NM, 624 watts PV, The Kid CC, GC-2 batteries @ 24 VDC, Outback VFX3524M
  • Vic
    Vic Solar Expert Posts: 3,208 ✭✭✭✭
    When the battery is fully-charged and transitions to Float, the WBjr's Capacity will read the same as the Capacity that you entered during set-up.

    But, as Mt Don mentioned, if the battery is cool/cold, the remaining Capacity will be reduced, by the Capacity vs temperature Factor that was entered during setup (this Factor has a Default value).

    Bet that the reduced Capacity is the result of the battery being cool or cold.
    FWIW, Vic
    Off Grid - Two systems -- 4 SW+ 5548 Inverters, Surrette 4KS25 1280 AH X2@48V, 11.1 KW STC PV, 4X MidNite Classic 150 w/ WBjrs, Beta KID on S-530s, MX-60s, MN Bkrs/Boxes.  25 KVA Polyphase Kubota diesel,  Honda Eu6500isa,  Eu3000is-es, Eu2000,  Eu1000 gensets.  Thanks Wind-Sun for this great Forum.
  • ldiorio
    ldiorio Solar Expert Posts: 48 ✭✭
    thanks for the info
    guess its a combination of efficiency and temp---makes sense
    in fthe process of setting up my system and now that i have the WBJR have to determine what the level of discharge should be and LBCO for the system--so i need 2 voltage figures
    1-LBCO
    2-DOD

    need some recommendations from users based on there experience with charging and discharging batteries
    i have 8- 6V Fullriver AGM's with a mangum 240v inverter
  • westbranch
    westbranch Solar Expert Posts: 5,183 ✭✭✭✭
    Due to temp compensation I have never seen my Capacity match the entered amount but have seen 100% SoC many times, as the charge cycle has entered Float.... it is a normal thing,

    ps don't know why this did not show as posted but it is showing now....I hope
     
    KID #51B  4s 140W to 24V 900Ah C&D AGM
    CL#29032 FW 2126/ 2073/ 2133 175A E-Panel WBjr, 3 x 4s 140W to 24V 900Ah C&D AGM 
    Cotek ST1500W 24V Inverter,OmniCharge 3024,
    2 x Cisco WRT54GL i/c DD-WRT Rtr & Bridge,
    Eu3/2/1000i Gens, 1680W & E-Panel/WBjr to come, CL #647 asleep
    West Chilcotin, BC, Canada