Can you use 2 - 24v chargers on a 48v bank?

Recently made the swap from 24 to 48 volt system. As yet I do not have a 48v charger, but do have 2 - 24v chargers. Numerous cloudy days and the impending/now up us ice storm has forced me to charge the battery bank with other than solar. After shutting everything down, I disconnected the wire between batteries 4 and 5 making 2 banks of 24v and hooked up a charger to each bank.
The question is, could I have left all 8 in series with the system up and running as normal and just connected a charger at each 24v part of the 48v series string (Charger #1 with positive at battery 1 and negative at battery 4 and Charger #2 with positive at battery 6 and negative at battery 8)? Battery 1 positive and battery 8 negative are the 48v leads to system.
4-Risen 320 watt in series/parallel, 8-215ah 6 volt GC2 batteries in series, Exeltech 1100 watt/48 volt inverter, Tristar 45 MPPT controller.
Comments
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
Your chargers have to provide "isolation" they can't have either output connection tied to ground internally, or tied to the powerline neutral. So as long as they don't provide any sneak paths to the other end of the battery, it should work.
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,
narrow AC blade to both outputs -, +
wide AC blade to both outputs -, +
ground wire to chassis
ground wire to both outputs -, +
Then flip reverse the meter leads and do it all over again.
Then do both again at the high ohms scale ( uses a higher voltage)
Even after all that, it may blow smoke, but it cuts your chances down
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,